File blocks show error in editor when added in columns without file name

[nicolynramos]

Quick summary

When you add a File block inside of a column and leave the file name blank, returning to the editor shows an error "This block contains unexpected or invalid content" with a button to "Attempt Block Recovery".

Steps to reproduce

1. Add a Columns block to a page
2. Add a File block inside one of the columns
3. Select a file either from the Media Library or upload
4. Remove the file name added next to the Download button
5. Save and reload editor page

What you expected to happen

The File block should show the same way it does when you add the block originally.

What actually happened

The block shows an error message: "This block contains unexpected or invalid content" with a button to "Attempt Block Recovery".

Context

I was working with a user who reported the bug here: 33640478-hc
It looks like the blocks are functioning fine on the live site but show error in the editor side. I did some testing and it happens across all themes I tried, but only inside of a column with no file name specified. The block works as expected outside of a column and/or when a file name is added. The type of file doesn't seem to matter either as all file types I tried came up with the same error. I also tested on both Atomic and Simple sites, no difference in outcome.

Simple, Atomic or both?

Simple, Atomic

Theme-specific issue?

Not theme-specific, all themes affected

Browser, operating system and other notes

No response

Reproducibility

Consistent

Severity

All

Available workarounds?

No response

Workaround details

No response

[kosiew]

Hi @nicolynramos ,

Thanks for reporting this and the detailed steps.

I could reproduce this too.
Triaging for developers' further investigation.

[cometgrrl]

This is reproducible on jurassic.ninja, and a core bug and needs to be filed in the WordPress/gutenberg repro.

[ccwalburn]

This user wants to be notified when this is resolved. 4684463-zen

[kerrynicl]

Refiled bug report on Gutenberg Repo - GH- 39057