Browse Mode: Templates/Parts with a long name in the sidebar are displayed untidily

[franzaurus]

Description

When adding new Templates/Parts with a long name, the sidebar displays their names untidily, it even cuts off the Edit button.

It's affected WP 6.2 Beta 2 and the nightly build as well.

Step-by-step reproduction instructions

1. Go to Site Editor
2. Add new Template or Template part with a long name like “Header with a White Background” or “Custom Template with a Long Name”
3. Go back to the Navigation Sidebar (by clicking the W icon, or your site's icon)
4. Observe the Template/Part’s name looks cramp and untidy, even the side of the Edit button is cut off.

Screenshots, screen recording, code snippet

On WP 6.2 Beta 2

On WP nightly 6.2beta2-55354

Environment info

• WP 6.2 Beta 2
• WP 6.2-beta2-55354
• Firefox
• Chrome

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