FSE Theme Global Styles: Changes to Layout not saving

[filipanoscampos]

Quick summary

On a simple site, with an active FSE theme (I tried Twenty Twenty-Two, Blank Canvas, and Masu), changes to the layout content width aren't saving.

Steps to reproduce

1. on a website with an active FSE theme, open the site Editor and navigate to the theme global styles;
2. Choose the option to edit the Layout
3. Change the width of the content
4. Save your changes
5. Notice that, once the page reloads, the changes aren't saved

What you expected to happen

The changes to content width to be saved and applied to the template.

What actually happened

Everything stayed as before, no changes were saved.

Context

pd4QKa-E6-p2
5694729-zd-woothemes

Platform (Simple, Atomic, or both?)

Simple

Theme-specific issue?

I was able to reproduce this on multiple FSE themes.

Browser, operating system and other notes

No response

Reproducibility

Consistent

Severity

Most (> 50%)

Available workarounds?

No response

Workaround details

No response

[github-actions]

Support References

This comment is automatically generated. Please do not edit it.

• 5694729-zen

[zachspears]

Able to Reproduce in Quadrat on Simple Site.

[ClassicRKR27]

• Another instance here with the Bryne theme: 31901192-hc

[Copons]

Hi folks, thanks for reporting!
I'm closing this as duplicate of #67059, which is being currently worked (it seems to require a Core Gutenberg fix; see the issue).