I’m not sure whether this is a Plasma bug or a LibreOffice bug, but LibreOffice is rather ugly with KDE Plasma.
On Plasma, LibreOffice has the following graphical bugs when using the Tabbed UI:
- Tabs are vertically misaligned by -2 pixels
- Tab shapes are inconsistent: sometimes they are completely rectangular, and other times they are rounded without respect to the shape of adjacent tabs, leading to jarring visual results
- The tabs themselves are an unappealing dark grey, whereas on other desktop environments the tabs take the same colour as the dock they are drawn against
These issues do not affect LibreOffice on GNOME or Cinnamon, as seen here:
I’ve reproduced this Plasma bug on Debian, Manjaro, and Fedora, and switching between Wayland/X11 makes no difference. Does anyone know what would be causing these issues and whether they can be fixed? Is this a Plasma bug or a Libreoffice bug?

