Block transformation is not working due to canInsertBlockType is returning false.

[dipeshkakadiya]

Description

I'm trying to do custom code so I can transform one block to another block automatically on post load.

In my case, I enabled core/legacy-widget for post editor and auto transformation will find here.

https://gist.github.com/dipeshkakadiya/6f18792be4d7c170eb6c71cc63e4d713

On replaceBlocks, canInsertBlockType is returning false. If I'm trying to manually transformation then canInsertBlockType return Ture.

Above issue occure with WordPress version 6.1. With WordPress 6.0 it was working fine.

Step-by-step reproduction instructions

Use blow script to transform one block to another block.

https://gist.github.com/dipeshkakadiya/6f18792be4d7c170eb6c71cc63e4d713

Screenshots, screen recording, code snippet

Auto Transformation on Page load

Manual Transformation

Environment info

WordPress Version : 6.1
browser : Chrome

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[dipeshkakadiya]

While debugging I found out in canInsertBlockTypeUnmemoized method state is different in both case.

Look like auto transformation might be too soon. Please share any suggestion to fix this issue. More weird part is this custom functionality was working on WordPress 6.0 version. Something changed in WordPress 6.1 effecting this.

[tyxla]

Haven't been able to dig further, but this looks like this could be related to the recent perf optimizations we did in #46146 and #46204, cc @youknowriad

[youknowriad]

I think this is unrelated to these refactorings since these are not present on WP 6.1 AFAIK