Site Editor: unexpected group block UI in block inspector

[ianstewart]

Steps to reproduce the behavior

1. Create a new site with the Site Editor on WP.com
2. Click on a group block
3. Open the block inspector
4. See error

What I expected to happen

Group Block UI in Core

What actually happened

Too-wide UI in block inspector.

[andrewserong]

I think this one might be resolved by WordPress/gutenberg#31073 in Gutenberg 10.5, but I'll double check.

[andrewserong]

Similar issue to #52345

This appears to be working correctly now:

I believe this was a regression in Gutenberg v10.5.0 RC 1 reported in WordPress/gutenberg#31070 and resolved in WordPress/gutenberg#31073. I double checked on my test site, and this issue is no longer present as of Gutenberg v10.5.2 running on edge stickered sites (and also isn't present in v10.4.1 on a site without the sticker present). Let us know if you see the issue again, and we can re-open the issue.