Description

Situation:
The TopToolbar is enabled in the Block editor settings
Now, the Page template is loaded. You can see the List View in the Top Toolbar. But when you click on any other block, the icon disappears and it's not coming back, unless the user leaves the template editing mode and loads the template again from the left menu.
The list view icon only appears when the template is loaded into the editor. In subsequent editing steps the List view disappears.

reported by Hans-Gerd Gerhards on FSE 24

I was able to reproduce it.

Step-by-step reproduction instructions

• Theme Twenty-Twenty-Three is active
• Enter the Editor
• Select Templates from the left menu
• Select Page
• Enable the TopToolbar
• Try to open the List view after you clicked on some blocks in the template.

Screenshots, screen recording, code snippet

This video should show the issue

Environment info

• WP 6.2.2
• Theme: Twenty-Twenty-Three
• Gutenberg Nightly 16.1.20230613
• Chrome 114.0.5735.106
• MacOS 13.3.1

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