Fix layout applied to post editor on classic themes

[tellthemachines]

What?

Fixes #43752

Why?

How?

The wrong layout class was being applied in the post editor when classic themes are in use.

Testing Instructions

1. With TwentyTwenty, add some content in a post;
2. Check that post content has the proper content width.

Screenshots or screencast

Before:

After:

[github-actions]

Size Change: +8 B (0%)

Total Size: 1.24 MB

Filename	Size	Change
build/edit-post/index.min.js	30.5 kB	+8 B (0%)

ℹ️ View Unchanged

Filename	Size
build/a11y/index.min.js	982 B
build/annotations/index.min.js	2.76 kB
build/api-fetch/index.min.js	2.26 kB
build/autop/index.min.js	2.14 kB
build/blob/index.min.js	475 B
build/block-directory/index.min.js	7.05 kB
build/block-directory/style-rtl.css	990 B
build/block-directory/style.css	991 B
build/block-editor/default-editor-styles-rtl.css	378 B
build/block-editor/default-editor-styles.css	378 B
build/block-editor/index.min.js	161 kB
build/block-editor/style-rtl.css	15.2 kB
build/block-editor/style.css	15.2 kB
build/block-library/blocks/archives/editor-rtl.css	61 B
build/block-library/blocks/archives/editor.css	60 B
build/block-library/blocks/archives/style-rtl.css	65 B
build/block-library/blocks/archives/style.css	65 B
build/block-library/blocks/audio/editor-rtl.css	150 B
build/block-library/blocks/audio/editor.css	150 B
build/block-library/blocks/audio/style-rtl.css	122 B
build/block-library/blocks/audio/style.css	122 B
build/block-library/blocks/audio/theme-rtl.css	110 B
build/block-library/blocks/audio/theme.css	110 B
build/block-library/blocks/avatar/editor-rtl.css	116 B
build/block-library/blocks/avatar/editor.css	116 B
build/block-library/blocks/avatar/style-rtl.css	59 B
build/block-library/blocks/avatar/style.css	59 B
build/block-library/blocks/block/editor-rtl.css	161 B
build/block-library/blocks/block/editor.css	161 B
build/block-library/blocks/button/editor-rtl.css	441 B
build/block-library/blocks/button/editor.css	441 B
build/block-library/blocks/button/style-rtl.css	505 B
build/block-library/blocks/button/style.css	505 B
build/block-library/blocks/buttons/editor-rtl.css	292 B
build/block-library/blocks/buttons/editor.css	292 B
build/block-library/blocks/buttons/style-rtl.css	275 B
build/block-library/blocks/buttons/style.css	275 B
build/block-library/blocks/calendar/style-rtl.css	207 B
build/block-library/blocks/calendar/style.css	207 B
build/block-library/blocks/categories/editor-rtl.css	84 B
build/block-library/blocks/categories/editor.css	83 B
build/block-library/blocks/categories/style-rtl.css	79 B
build/block-library/blocks/categories/style.css	79 B
build/block-library/blocks/code/editor-rtl.css	53 B
build/block-library/blocks/code/editor.css	53 B
build/block-library/blocks/code/style-rtl.css	103 B
build/block-library/blocks/code/style.css	103 B
build/block-library/blocks/code/theme-rtl.css	124 B
build/block-library/blocks/code/theme.css	124 B
build/block-library/blocks/columns/editor-rtl.css	108 B
build/block-library/blocks/columns/editor.css	108 B
build/block-library/blocks/columns/style-rtl.css	406 B
build/block-library/blocks/columns/style.css	406 B
build/block-library/blocks/comment-author-avatar/editor-rtl.css	125 B
build/block-library/blocks/comment-author-avatar/editor.css	125 B
build/block-library/blocks/comment-content/style-rtl.css	92 B
build/block-library/blocks/comment-content/style.css	92 B
build/block-library/blocks/comment-template/style-rtl.css	187 B
build/block-library/blocks/comment-template/style.css	185 B
build/block-library/blocks/comments-pagination-numbers/editor-rtl.css	123 B
build/block-library/blocks/comments-pagination-numbers/editor.css	121 B
build/block-library/blocks/comments-pagination/editor-rtl.css	222 B
build/block-library/blocks/comments-pagination/editor.css	209 B
build/block-library/blocks/comments-pagination/style-rtl.css	235 B
build/block-library/blocks/comments-pagination/style.css	231 B
build/block-library/blocks/comments-title/editor-rtl.css	75 B
build/block-library/blocks/comments-title/editor.css	75 B
build/block-library/blocks/comments/editor-rtl.css	834 B
build/block-library/blocks/comments/editor.css	832 B
build/block-library/blocks/comments/style-rtl.css	632 B
build/block-library/blocks/comments/style.css	630 B
build/block-library/blocks/cover/editor-rtl.css	605 B
build/block-library/blocks/cover/editor.css	607 B
build/block-library/blocks/cover/style-rtl.css	1.55 kB
build/block-library/blocks/cover/style.css	1.55 kB
build/block-library/blocks/embed/editor-rtl.css	293 B
build/block-library/blocks/embed/editor.css	293 B
build/block-library/blocks/embed/style-rtl.css	410 B
build/block-library/blocks/embed/style.css	410 B
build/block-library/blocks/embed/theme-rtl.css	110 B
build/block-library/blocks/embed/theme.css	110 B
build/block-library/blocks/file/editor-rtl.css	300 B
build/block-library/blocks/file/editor.css	300 B
build/block-library/blocks/file/style-rtl.css	253 B
build/block-library/blocks/file/style.css	254 B
build/block-library/blocks/file/view.min.js	346 B
build/block-library/blocks/freeform/editor-rtl.css	2.44 kB
build/block-library/blocks/freeform/editor.css	2.44 kB
build/block-library/blocks/gallery/editor-rtl.css	948 B
build/block-library/blocks/gallery/editor.css	950 B
build/block-library/blocks/gallery/style-rtl.css	1.53 kB
build/block-library/blocks/gallery/style.css	1.53 kB
build/block-library/blocks/gallery/theme-rtl.css	108 B
build/block-library/blocks/gallery/theme.css	108 B
build/block-library/blocks/group/editor-rtl.css	337 B
build/block-library/blocks/group/editor.css	337 B
build/block-library/blocks/group/style-rtl.css	57 B
build/block-library/blocks/group/style.css	57 B
build/block-library/blocks/group/theme-rtl.css	78 B
build/block-library/blocks/group/theme.css	78 B
build/block-library/blocks/heading/style-rtl.css	76 B
build/block-library/blocks/heading/style.css	76 B
build/block-library/blocks/html/editor-rtl.css	327 B
build/block-library/blocks/html/editor.css	329 B
build/block-library/blocks/image/editor-rtl.css	876 B
build/block-library/blocks/image/editor.css	873 B
build/block-library/blocks/image/style-rtl.css	627 B
build/block-library/blocks/image/style.css	630 B
build/block-library/blocks/image/theme-rtl.css	110 B
build/block-library/blocks/image/theme.css	110 B
build/block-library/blocks/latest-comments/style-rtl.css	284 B
build/block-library/blocks/latest-comments/style.css	284 B
build/block-library/blocks/latest-posts/editor-rtl.css	213 B
build/block-library/blocks/latest-posts/editor.css	212 B
build/block-library/blocks/latest-posts/style-rtl.css	463 B
build/block-library/blocks/latest-posts/style.css	462 B
build/block-library/blocks/list/style-rtl.css	88 B
build/block-library/blocks/list/style.css	88 B
build/block-library/blocks/media-text/editor-rtl.css	266 B
build/block-library/blocks/media-text/editor.css	263 B
build/block-library/blocks/media-text/style-rtl.css	507 B
build/block-library/blocks/media-text/style.css	505 B
build/block-library/blocks/more/editor-rtl.css	431 B
build/block-library/blocks/more/editor.css	431 B
build/block-library/blocks/navigation-link/editor-rtl.css	705 B
build/block-library/blocks/navigation-link/editor.css	703 B
build/block-library/blocks/navigation-link/style-rtl.css	115 B
build/block-library/blocks/navigation-link/style.css	115 B
build/block-library/blocks/navigation-submenu/editor-rtl.css	296 B
build/block-library/blocks/navigation-submenu/editor.css	295 B
build/block-library/blocks/navigation-submenu/view.min.js	423 B
build/block-library/blocks/navigation/editor-rtl.css	1.96 kB
build/block-library/blocks/navigation/editor.css	1.96 kB
build/block-library/blocks/navigation/style-rtl.css	2.04 kB
build/block-library/blocks/navigation/style.css	2.03 kB
build/block-library/blocks/navigation/view-modal.min.js	2.78 kB
build/block-library/blocks/navigation/view.min.js	443 B
build/block-library/blocks/nextpage/editor-rtl.css	395 B
build/block-library/blocks/nextpage/editor.css	395 B
build/block-library/blocks/page-list/editor-rtl.css	363 B
build/block-library/blocks/page-list/editor.css	363 B
build/block-library/blocks/page-list/style-rtl.css	175 B
build/block-library/blocks/page-list/style.css	175 B
build/block-library/blocks/paragraph/editor-rtl.css	174 B
build/block-library/blocks/paragraph/editor.css	174 B
build/block-library/blocks/paragraph/style-rtl.css	260 B
build/block-library/blocks/paragraph/style.css	260 B
build/block-library/blocks/post-author/style-rtl.css	175 B
build/block-library/blocks/post-author/style.css	176 B
build/block-library/blocks/post-comments-form/editor-rtl.css	96 B
build/block-library/blocks/post-comments-form/editor.css	96 B
build/block-library/blocks/post-comments-form/style-rtl.css	493 B
build/block-library/blocks/post-comments-form/style.css	493 B
build/block-library/blocks/post-date/style-rtl.css	61 B
build/block-library/blocks/post-date/style.css	61 B
build/block-library/blocks/post-excerpt/editor-rtl.css	73 B
build/block-library/blocks/post-excerpt/editor.css	73 B
build/block-library/blocks/post-excerpt/style-rtl.css	69 B
build/block-library/blocks/post-excerpt/style.css	69 B
build/block-library/blocks/post-featured-image/editor-rtl.css	507 B
build/block-library/blocks/post-featured-image/editor.css	505 B
build/block-library/blocks/post-featured-image/style-rtl.css	166 B
build/block-library/blocks/post-featured-image/style.css	166 B
build/block-library/blocks/post-template/editor-rtl.css	99 B
build/block-library/blocks/post-template/editor.css	98 B
build/block-library/blocks/post-template/style-rtl.css	282 B
build/block-library/blocks/post-template/style.css	282 B
build/block-library/blocks/post-terms/style-rtl.css	73 B
build/block-library/blocks/post-terms/style.css	73 B
build/block-library/blocks/post-title/style-rtl.css	100 B
build/block-library/blocks/post-title/style.css	100 B
build/block-library/blocks/preformatted/style-rtl.css	103 B
build/block-library/blocks/preformatted/style.css	103 B
build/block-library/blocks/pullquote/editor-rtl.css	135 B
build/block-library/blocks/pullquote/editor.css	135 B
build/block-library/blocks/pullquote/style-rtl.css	326 B
build/block-library/blocks/pullquote/style.css	325 B
build/block-library/blocks/pullquote/theme-rtl.css	167 B
build/block-library/blocks/pullquote/theme.css	167 B
build/block-library/blocks/query-pagination-numbers/editor-rtl.css	122 B
build/block-library/blocks/query-pagination-numbers/editor.css	121 B
build/block-library/blocks/query-pagination/editor-rtl.css	221 B
build/block-library/blocks/query-pagination/editor.css	211 B
build/block-library/blocks/query-pagination/style-rtl.css	282 B
build/block-library/blocks/query-pagination/style.css	278 B
build/block-library/blocks/query-title/style-rtl.css	63 B
build/block-library/blocks/query-title/style.css	63 B
build/block-library/blocks/query/editor-rtl.css	439 B
build/block-library/blocks/query/editor.css	439 B
build/block-library/blocks/quote/style-rtl.css	213 B
build/block-library/blocks/quote/style.css	213 B
build/block-library/blocks/quote/theme-rtl.css	223 B
build/block-library/blocks/quote/theme.css	226 B
build/block-library/blocks/read-more/style-rtl.css	132 B
build/block-library/blocks/read-more/style.css	132 B
build/block-library/blocks/rss/editor-rtl.css	202 B
build/block-library/blocks/rss/editor.css	204 B
build/block-library/blocks/rss/style-rtl.css	289 B
build/block-library/blocks/rss/style.css	288 B
build/block-library/blocks/search/editor-rtl.css	165 B
build/block-library/blocks/search/editor.css	165 B
build/block-library/blocks/search/style-rtl.css	396 B
build/block-library/blocks/search/style.css	393 B
build/block-library/blocks/search/theme-rtl.css	114 B
build/block-library/blocks/search/theme.css	114 B
build/block-library/blocks/separator/editor-rtl.css	146 B
build/block-library/blocks/separator/editor.css	146 B
build/block-library/blocks/separator/style-rtl.css	233 B
build/block-library/blocks/separator/style.css	233 B
build/block-library/blocks/separator/theme-rtl.css	194 B
build/block-library/blocks/separator/theme.css	194 B
build/block-library/blocks/shortcode/editor-rtl.css	464 B
build/block-library/blocks/shortcode/editor.css	464 B
build/block-library/blocks/site-logo/editor-rtl.css	461 B
build/block-library/blocks/site-logo/editor.css	461 B
build/block-library/blocks/site-logo/style-rtl.css	192 B
build/block-library/blocks/site-logo/style.css	192 B
build/block-library/blocks/site-tagline/editor-rtl.css	86 B
build/block-library/blocks/site-tagline/editor.css	86 B
build/block-library/blocks/site-title/editor-rtl.css	84 B
build/block-library/blocks/site-title/editor.css	84 B
build/block-library/blocks/social-link/editor-rtl.css	184 B
build/block-library/blocks/social-link/editor.css	184 B
build/block-library/blocks/social-links/editor-rtl.css	674 B
build/block-library/blocks/social-links/editor.css	673 B
build/block-library/blocks/social-links/style-rtl.css	1.39 kB
build/block-library/blocks/social-links/style.css	1.39 kB
build/block-library/blocks/spacer/editor-rtl.css	322 B
build/block-library/blocks/spacer/editor.css	322 B
build/block-library/blocks/spacer/style-rtl.css	48 B
build/block-library/blocks/spacer/style.css	48 B
build/block-library/blocks/table/editor-rtl.css	494 B
build/block-library/blocks/table/editor.css	494 B
build/block-library/blocks/table/style-rtl.css	611 B
build/block-library/blocks/table/style.css	609 B
build/block-library/blocks/table/theme-rtl.css	175 B
build/block-library/blocks/table/theme.css	175 B
build/block-library/blocks/tag-cloud/style-rtl.css	239 B
build/block-library/blocks/tag-cloud/style.css	239 B
build/block-library/blocks/template-part/editor-rtl.css	235 B
build/block-library/blocks/template-part/editor.css	235 B
build/block-library/blocks/template-part/theme-rtl.css	101 B
build/block-library/blocks/template-part/theme.css	101 B
build/block-library/blocks/text-columns/editor-rtl.css	95 B
build/block-library/blocks/text-columns/editor.css	95 B
build/block-library/blocks/text-columns/style-rtl.css	166 B
build/block-library/blocks/text-columns/style.css	166 B
build/block-library/blocks/verse/style-rtl.css	87 B
build/block-library/blocks/verse/style.css	87 B
build/block-library/blocks/video/editor-rtl.css	561 B
build/block-library/blocks/video/editor.css	563 B
build/block-library/blocks/video/style-rtl.css	174 B
build/block-library/blocks/video/style.css	174 B
build/block-library/blocks/video/theme-rtl.css	110 B
build/block-library/blocks/video/theme.css	110 B
build/block-library/common-rtl.css	1.01 kB
build/block-library/common.css	1 kB
build/block-library/editor-elements-rtl.css	75 B
build/block-library/editor-elements.css	75 B
build/block-library/editor-rtl.css	10.9 kB
build/block-library/editor.css	10.9 kB
build/block-library/elements-rtl.css	54 B
build/block-library/elements.css	54 B
build/block-library/index.min.js	188 kB
build/block-library/reset-rtl.css	478 B
build/block-library/reset.css	478 B
build/block-library/style-rtl.css	11.9 kB
build/block-library/style.css	11.9 kB
build/block-library/theme-rtl.css	695 B
build/block-library/theme.css	700 B
build/block-serialization-default-parser/index.min.js	1.1 kB
build/block-serialization-spec-parser/index.min.js	2.83 kB
build/blocks/index.min.js	49.6 kB
build/components/index.min.js	197 kB
build/components/style-rtl.css	11.5 kB
build/components/style.css	11.6 kB
build/compose/index.min.js	12 kB
build/core-data/index.min.js	15.5 kB
build/customize-widgets/index.min.js	11.3 kB
build/customize-widgets/style-rtl.css	1.38 kB
build/customize-widgets/style.css	1.38 kB
build/data-controls/index.min.js	653 B
build/data/index.min.js	8.06 kB
build/date/index.min.js	32 kB
build/deprecated/index.min.js	507 B
build/dom-ready/index.min.js	324 B
build/dom/index.min.js	4.69 kB
build/edit-navigation/index.min.js	16 kB
build/edit-navigation/style-rtl.css	4 kB
build/edit-navigation/style.css	4.01 kB
build/edit-post/classic-rtl.css	546 B
build/edit-post/classic.css	547 B
build/edit-post/style-rtl.css	6.94 kB
build/edit-post/style.css	6.94 kB
build/edit-site/index.min.js	57.8 kB
build/edit-site/style-rtl.css	8.22 kB
build/edit-site/style.css	8.2 kB
build/edit-widgets/index.min.js	16.5 kB
build/edit-widgets/style-rtl.css	4.35 kB
build/edit-widgets/style.css	4.35 kB
build/editor/index.min.js	41.5 kB
build/editor/style-rtl.css	3.66 kB
build/editor/style.css	3.65 kB
build/element/index.min.js	4.68 kB
build/escape-html/index.min.js	537 B
build/format-library/index.min.js	6.75 kB
build/format-library/style-rtl.css	571 B
build/format-library/style.css	571 B
build/hooks/index.min.js	1.64 kB
build/html-entities/index.min.js	448 B
build/i18n/index.min.js	3.77 kB
build/is-shallow-equal/index.min.js	527 B
build/keyboard-shortcuts/index.min.js	1.78 kB
build/keycodes/index.min.js	1.81 kB
build/list-reusable-blocks/index.min.js	1.74 kB
build/list-reusable-blocks/style-rtl.css	835 B
build/list-reusable-blocks/style.css	835 B
build/media-utils/index.min.js	2.93 kB
build/notices/index.min.js	953 B
build/nux/index.min.js	2.05 kB
build/nux/style-rtl.css	732 B
build/nux/style.css	728 B
build/plugins/index.min.js	1.94 kB
build/preferences-persistence/index.min.js	2.22 kB
build/preferences/index.min.js	1.3 kB
build/primitives/index.min.js	933 B
build/priority-queue/index.min.js	612 B
build/react-i18n/index.min.js	696 B
build/react-refresh-entry/index.min.js	8.44 kB
build/react-refresh-runtime/index.min.js	7.31 kB
build/redux-routine/index.min.js	2.74 kB
build/reusable-blocks/index.min.js	2.21 kB
build/reusable-blocks/style-rtl.css	256 B
build/reusable-blocks/style.css	256 B
build/rich-text/index.min.js	10.4 kB
build/server-side-render/index.min.js	1.61 kB
build/shortcode/index.min.js	1.53 kB
build/token-list/index.min.js	644 B
build/url/index.min.js	3.61 kB
build/vendors/react-dom.min.js	38.5 kB
build/vendors/react.min.js	4.34 kB
build/viewport/index.min.js	1.08 kB
build/warning/index.min.js	268 B
build/widgets/index.min.js	7.2 kB
build/widgets/style-rtl.css	1.18 kB
build/widgets/style.css	1.19 kB
build/wordcount/index.min.js	1.06 kB

_{compressed-size-action}

[andrewserong]

Thanks for fixing this up @tellthemachines! This is testing nicely for me, and the wide and full width alignments are still working well in blocks-based themes, too. Here's a screenshot with this PR applied in the post editor running TwentyTwenty theme:

[priethor]

Thanks, @tellthemachines !

Backported to 14.0 in ce36540 ✅