Created attachment 181581 [details]
In all Libreoffice windows (Writer, Impress, ...) strange colors are displayed if I use a themed view. The strange rectangle in the top left angle is displayed. It is not shown, when I resize window lower than some size (approx 3500x2000 pixels).
I use debian package (Ubuntu 22.04).
Here is the screenshot with 'dark' theme applied. This behavior does not depend on OpenCL is on or off.
Thanks for filing, but known issue with theming predating HiDPI support.
*** This bug has been marked as a duplicate of bug 131023 ***