Description

As reported by others in core-editor slack , there seems to be a regression in the add block prompt within the site editor. Rather than just showing a + button, there is now text saying "Add Block".

Step-by-step reproduction instructions

1. Set up a site with FSE capabilities
2. Use either the site editor or template editing mode and notice that the add block prompt has changed.

Expected behaviour

Expect to just see the + button and no "Add Block" text.

Actual behaviour

The add block appender now say "add block" and looks quite awkward :D

Screenshots or screen recording (optional)

Here are two examples in the Site Editor where adding a new template part causes it and trying to add a new navigation block item:

Here's an example from the Template Editing Mode:

WordPress information

• WordPress version: 5.7.1
• Gutenberg version: 10.6RC
• Are all plugins except Gutenberg deactivated? Yes
• Are you using a default theme (e.g. Twenty Twenty-One)? TT1 Blocks

Device information

• Device: Desktop
• Operating system: MacOS
• Browser: Chrome