Quote block can lose cite tag

[collinanderson]

To Reproduce
Steps to reproduce the behavior:

1. Create a Quote Block
2. type one letter in the citation
3. switch to the main quote field (or press shift+tab)
4. switch back to the citation (tab) and backspace that one letter
5. switch to another field (shift+tab)
6. try to switch back to citation field (tab)

Expected behavior
I get a blinking cursor on the citation field, or tab takes me to the empty paragraph block

Screenshots
( element is completely missing from the dom)

Desktop (please complete the following information):

• OS: Mac 10.13.6 (17G65)
• Browser: Chrome Version 68.0.3440.106 (Official Build) (64-bit)
  (also happens in firefox on mac, and chrome on windows)

Additional context

• Gutenberg version 3.6.2

[designsimply]

Tested and confirmed in Chrome 68.0.3440.106 using WordPress 4.9.8 and Gutenberg 3.6.2 but I didn't see the same bug happen when testing with Firefox 61.0.2. (36s)

HTML before:

<div class="components-autocomplete"><cite aria-label="Write citation…" aria-autocomplete="list" aria-expanded="false" role="textbox" aria-multiline="true" class="editor-rich-text__tinymce mce-content-body" contenteditable="true" data-is-placeholder-visible="false" id="mce_2"><br data-mce-bogus="1"></cite><div role="presentation"></div></div>

HTML after:

<div class="components-autocomplete"><br data-mce-bogus="1"></div>

^{Seen at http://alittletestblog.com/wp-admin/post.php?post=14474&action=edit running WordPress 4.9.8 and Gutenberg 3.6.2 using Chrome 68.0.3440.106 on macOS 10.13.6. (1m13s)}

Just for reference, can you note which version of Firefox you tested with?

[collinanderson]

Firefox (on Mac)
Version 61.0.1
Build ID 20180704003137

[ellatrix]

Can confirm. Looking for a fix.

[ellatrix]

Seems to just happen when you delete the letter from the cite and then blur the field.

[ellatrix]

The cause seems to be cite being an inline element and using that as a RichText container. If I use a div or footer, the problem seems to disappear.

[ellatrix]

@designsimply @collinanderson Does #9195 fix the issue for you?

[collinanderson]

#8773 would fix this

[aduth]

Closed by #8785