[wp-trac] [WordPress Trac] #65040: WordPress Paragraph block throwing "Block contains unexpected or invalid content" error inconsistently on brand new blocks in WordPress 6.9.4

[WordPress Trac]

#65040: WordPress Paragraph block throwing "Block contains unexpected or invalid
content" error inconsistently on brand new blocks in WordPress 6.9.4
--------------------------+-----------------------------
 Reporter:  playagroup    |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  6.9.4
 Severity:  major         |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 I am experiencing a consistent but inconsistently triggered validation
 error on WordPress Paragraph blocks in WordPress 6.9.4 with automatic
 updates enabled.


 Brand new WordPress Paragraph blocks are triggering "Block contains
 unexpected or invalid content" errors under WordPress 6.9.4.  The build
 structure is a container block housing a GenerateBlocks image block with a
 separate container block directly underneath containing the Paragraph
 block used as a caption text centered in bold text and this Paragraph
 block is where the validator error is occurring unevenly applied meaning
 it’s not rejecting every single container block within the new build area
 in this years old post I’m re-building.

 The critical diagnostic detail: the error fires randomly across newly
 created blocks only not the original block farther down the page.  Every
 single item is built inside the identical block structure I detailed
 above.  I’m rebuilding this post taking it from one rather GIANT/TALL
 container block housing the content into a series of multiple container
 blocks so the underlying page structure is leaner and will render even
 faster for website visitors.  So, there’s the old (original content) below
 in that older very tall container block and brand new container blocks at
 the top of the post.  Each new container block up above is from scratch
 nothing is copied from down below. Same block type and build structure,
 identical formatting, same build process every time — yet the validator
 accepts some and rejects others inconsistently. A plugin conflict would
 produce consistent errors. This does not.

 Clicking "Attempt Recovery" is destructive — it strips all formatting and
 content below the first line of my caption. It is not a viable solution
 and the other two options take me from bad to worse territory so all three
 in this instance are dead on arrival.

 This is not a GeneratePress Premium theme or GenerateBlocks Pro issue. The
 error is on the WordPress core Paragraph block.

 What I’m running building on:  WordPress version 6.9.4, GeneratePress
 Premium theme version 2.5.5, GenerateBlocks Pro version 2.5.0.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/65040>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform