The dark system theme I have set seems to make some applications look funny, with dark boxes where they should be light. Is there any way I can manually set a theme on a per-application basis?
if you don't find another solution, i have libreoffice installed via flatpak and this issue does not exist
I had the same problem. It's been a while but I'm fairly certain the problem can be solved by installed the appropriate integration package. Try installing these packages, libreoffice-plasma libreoffice-qt5 libreoffice-style-breeze. Take a look at this forum thread for more info, https://discuss.kde.org/t/libreoffice-does-not-honour-kde-theme/3347
Partially implimented system theme. Comments: oP MuSt wAnT It tO LoOk lIkE MiCrOsOfT!
The only one who so-far realized the theming is the problem suggested a quick fix that will likely leave this issue cropping up again in other applications.
Me: down-votes comments because I WANT there to be a better answer, not because I know one. Happy Monday, people!
Use another theme, look for them in Tools->Preferences
Yes, actually, one of the preinstalled themes is activated. Normally you have to pick the option that says something along the lines of "don't use themes" inside Tools/Preferences/LibreOffice/Application_Colors or something (depends on the language). That would make the desktop theme apply properly over LibreOffice.
You might need to reboot LibreOffice to see the changes take effect.
Try switching to a tabbed layout.
Is it a flatpak installation or repo installation?
At least you have the menu bar.
This is a common but solvable problem. I'm afk so can't link the right pages, but look up the LibreOffice and/or consistent gtk/qt theming entries on Arch Wiki
I dont know if this could be your issue, however I had some strange big black shadows arround GTK apps. After trying all different possible themes, playing arround with config files, CSS... Nothing helped.
However, on the Archlinux wiki, they mentioned something interesting: The compositor.
While this really depends what DE and what compositor is installed on your distro by default, I got rid off all the strangeness by enabling something in the compositor.
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