Strange square in textarea

[milotype]

Describe the issue

There is a small square in the textarea for translated strings.

I already tried

• I've read and searched the documentation.
• I've searched for similar filed issues in this repository.

Steps to reproduce the behavior

The issue doesn't exist in all projects at Hosted Weblate!

Two projects where I found the problem:

https://hosted.weblate.org/translate/weblate/application/hr/?checksum=8ce191f1fd1bdffe&sort_by=-priority,position
https://hosted.weblate.org/translate/weblate/languages/hr/?q=

Expected behavior

If not needed, remove the small square in the textarea for translated strings.

Screenshots

No response

Exception traceback

No response

How do you run Weblate?

weblate.org service

Weblate versions

No response

Weblate deploy checks

No response

Additional context

MacOS 10.11.6, Firefox 78.15.0esr (64-bit)

I'm not a programmer, but maybe this issue is connected with issue #11710?

[nijel]

Duplicate of #11710