Maybe a helpful detail is that the complete rendering area can disappear, e.g. after trying to add another render view (see attached screenshot).
I also just tried on Debian Bullseye and I could not reproduce the same issue, so it looks like it is Ubuntu-specific. ** Attachment added: "Screenshot of missing render view" https://bugs.launchpad.net/ubuntu/+source/paraview/+bug/1877464/+attachment/5399430/+files/Screenshot%20from%202020-08-06%2023-15-31.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877464 Title: Paraview does not render results (distribution-specific) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/paraview/+bug/1877464/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs