Just a new tracker bug to separate these out; clearly OpenGL is not on by default under Linux and there are many known issues - so lowish priority.
#98483 is a new one that seems to not be a duplicate
To test OpenGL in Linux you need to use the gtk backend:
$ SAL_USE_VCLPLUGIN=gtk soffice
Then Tools->Options->View->Graphics Output
Check "Use OpenGL for all rendering"