Site title block: Remove one by one letter until the last letter is removed. Site title is reset.

[paaljoachim]

Description

Using the Site Editor TT1.
Clicking into the Site Title and removing one by one letter until all letters are removed. The original Site title name is suddenly back.

Step-by-step reproduction instructions

1. Go to the Site Editor using TT1.
2. Remove the existing Site Title block. Add it back in again. (Probably not needed but this is what I happen to do.)
3. Click into the Site Title block and using the keyboard use backspace to remove one letter at a time.
4. Notice what happens after removing the last letter.
5. The last saved Site title will return or did so in my test.

Screenshots, screen recording, code snippet

Here is an example showing clicking into the Site title block and removing one letter at a time using the keyboard backspace (on a Mac). Removing the last letter brings the last saved site title back.

Doing the same process with the Tagline block. After removing the last letter the placeholder is seen.

Rremove-Site-Title-bug.mp4

Environment info

WordPress 5.8
Gutenberg plugin 11.3.0
TT1
Chrome
A local test site.
OSX 11.5.2

Pre-checks

• I have searched the existing issues.
• I have tested with all plugins deactivated except Gutenberg.