Description:
In LO 7.2.1.2 (installed on Ubuntu 21.10 from .deb archives downloaded from libreoffice.org), many buttons are not clickable anymore.  For example, picking a text color does not have any effect.  In direct comparison, LO 7.1.6.2 works fine.

Steps to Reproduce:
- run /opt/libreoffice7.1/program/soffice
- pick, e.g., Writer (Impress works, too)
- type a few characters, select them with the mouse
- click the down-arrow to the right of the text color icon
- select, e.g., green

Actual Results:
- color picker vanishes, text color stays the same

Expected Results:
- text turns green


Reproducible: Always


User Profile Reset: Yes



Additional Info:
- Text color is just one of MANY buttons that doesn't work as expected anymore.  For example, down-arrow to the right of the "unordered list" icon and then selecting a specific bullet style has no effect either.
- This happens with a completely clean ~/.config/libreoffice/ .