Flickering Unified Extension Menu with 4.3.0 on Phosh on PureOS and Droidian

Quick mobile-config-firefox 4.3.0 heads-up:

I sadly noticed a problem with the unified extension menu on PureOS (Librem 5) and Droidian (Pixel 3a, both Firefox ESR 115.*; I expect Mobian to be affected, too) after the release. postmarketOS is not impacted by this, and the fix does not seem to have negative side effects there, either.

This commit https://codeberg.org/1peter10/mobile-config-firefox/commit/99cb13c6ba13f7a02fdb6ac8cde88bf869a5f4f2 contains a fix for that. I hopefully manage to prepare a proper MR with signed commit for master tomorrow; before that I want to check whether the issue can also be reproduced on Arch Linux ARM/DanctNIX, as I want to understand better what the heck causes this.