I don’t usually update, but today I opened Xubuntu and the update manager popped up, so I clicked to install - it was just a 13 MB update. After updating, I opened Floorp and started seeing that all my icons at the taskbar, everything, started disappearing. It’s like I did “sudo rm -rf”! I’m not even mad. I always wanted to try EndeavourOS, and now Xubuntu has given me the opportunity to install it. Now downloading the EndeavourOS ISO and will install KDE on it. Enough rant/vent for now - REAL QUESTION: can anyone tell me how to theme GTK-based GNOME apps on KDE?
No idea what floorp is, but it sounds like it just messed up your desktop cache. I doubt it actually erased anything. Unless you clicked through the ‘you’re about to uninstall 530 packages’ popup that you get when you break your OS by installing from third party repositories that don’t support your OS version, then it’ll uninstall every conflicting package (which in some extreme cases means “your desktop environment”). Your user folder should still have all of your files though.
Also, if you enable the AUR on Endeavour, make sure to always update every package every time, or the same thing can happen there without adding any other software sources.
Badly. Neither KDE nor Gnome can style the other particularly well. KDE offers more options, but I’ve never bothered with trying to get the theme to feel “right” on the KDE installs I’ve messed with.
You can do basic styling in the main UI settings. I don’t think KDE supports styling libadwaita yet, though. I also believe you need to do some extra hackery to make Flatpak apps pick up your KDE settings. You may also need extra packages (qt5-style-plugins or such) depending on the applications you install.
Floorp is a Firefox fork, so that’s probably not it. But we don’t know what package was updated, so it’s really hard to help that way.
Floorp has a whole list of dependencies with specific major versions, so it’s hardly impossible for this to be the cause. Hard to tell without an archive of the floorp Packages file and the exact version (and other PPAs) of OPs Xubuntu install.
I’ve had this exact problem almost happen to me, though, and it happens a lot if you follow the random forum advice on Ubuntu forums.
Technically, even Gnome doesn’t officially support theaming libadwaita apps. The unofficial ways all amout to hacky methods at best (applying an user made css on top of the default style).
Applying a user made css has always been how the themes work, though? Without a fallback theme, Gnome apps wouldn’t run on platforms like KDE.