Miscellaneous topics that I'm too lazy to script

Firefox

tree-style tabs

1. Go to about:config in Firefox and make sure that toolkit.legacyUserProfileCustomizations.stylesheets is set to true.
2. Close Firefox.
3. Set up https://github.com/MrOtherGuy/firefox-csshacks (git method) and add this to userChrome.css:

@import url(chrome/hide_tabs_toolbar_v2.css)

screen sharing broken in MS Teams (and maybe others?)

This is caused by the "Plasma Integration" plugin. You need to disable a certain functionality for it to work:

1. Go to Manage extensions->Plasma Integration->Preferences and disable/uncheck "Enhanced Media Controls".
2. Restart Firefox for change to take effect.