after update cubeMX plugin to version 4.20.1, many crashs on eclipse
I have a workaround and it seems fix the problem.
It has beeen a long period that need to restrict GTK_version to 2, or the eclipse with CubeMX plugin crashs.
Few versions of CubeMX after 4.16 seems removed the restriction and now with 4.20.1 it comes back.
So, add below line into eclipse.ini
--launcher.GTK_version
2
Hope it help.