Selecting template-part and scrolling out of view reveals extra scrollbar.

[Humanify-nl]

Description

When a template-part is selected in site-editor, and it is scrolled out of view, an extra scrollbar appears on the container .interface-interface-skeleton__content. It appears to overflow and setting overflow: hidden solves the problem, but this does not seem like not a good solution.

Step-by-step reproduction instructions

1. Build a simple template with a template-part (try footer) in the site editor, so that it is out of view when viewport is on top.
2. Select the template-part, and scroll it out of view.
3. See the extra scrollbar appear on the container with class: .interface-interface-skeleton__content.
4. Deselect the template-part and see it disappear again.

Screenshots, screen recording, code snippet

Environment info

• WordPress 6.0.1.
• No Gutenberg plugin.

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