When editing a template part, the value of styles.spacing.padding in theme.json shouldn't be applied to the Site Editor wrapper

[Aljullu]

Description

The Site Editor is adding top and bottom padding to the .editor-styles-wrapper element in the site editor. That makes sense in the case of templates because that's how they are rendered in the frontend as well. But for template parts, that shouldn't be necessary because they are rendered inside a template and styles.spacing.padding is not applied to them.

Step-by-step reproduction instructions

1. With TT3 or any other theme with useRootPaddingAwareAlignments set to true in theme.json, go to Appearance > Editor.
2. Edit the Comments template part.
3. Notice the .editor-styles-wrapper element has top and bottom padding (inherited from styles.spacing.padding).

Expected behavior: no padding should be applied to .editor-styles-wrapper when editing template parts. In the frontend, templates parts don't inherit the padding from styles.spacing.padding, so in the editor they shouldn't either.

While for some template parts this issue is not critical (it just makes the template part to appear lower than it should), it's more problematic when the template part occupies the entire height available, for example a header with a height of 100vh or the Mini Cart template part in WC (see related issue: woocommerce/woocommerce#42482).

Screenshots, screen recording, code snippet

No response

Environment info

• WP 6.1.
• Gutenberg 15.1.0.

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

[tellthemachines]

Hi there @Aljullu! This should have been fixed in #54373 which was included in WP 6.4. Would you mind re-testing and checking whether it's still a problem?

[Aljullu]

You're right, @tellthemachines, this has been fixed. Thank you!