Hello Luc, This sounds similar to an issue reported in the FreeCAD forums [1] for which the following workaround is suggested:
"A workaround is to either disable DRI3 for all applications by adding the following line to /etc/environment LIBGL_DRI3_DISABLE=true Or to disable DRI3 just for Freecad by launching freecad from the terminal with the following command. LIBGL_DRI3_DISABLE=true freecad" 1. https://forum.freecadweb.org/viewtopic.php?f=4&t=26845&start=20#p227251
