slicer version: Slicer-5.1.0-2022-10-18-linux-amd64
When loading data, the progress bar just shows, but there is no content. slicer.util.MessageDialog has the same problem.
This doesn’t happen on other systems, so please add details about what OS, window system, etc you are seeing this on.
It looks like an issue with the graphics driver or compositor. Try to upgrade your driver (or switch to a different one) and restart your computer. You can also try to disable wayland (if you use it).
Getting a similar issue when using MessageDialog in the Ubuntu system. The text message is not getting displayed.
Are you using Wayland?
No, on printing the $XDG_SESSION_TYPE variable I get x11.