VcXsrv didn’t work either – nothing happened when I tried to open any X-app (including testers like Xeyes, nor the TBrowser), and yes I set the export display settings in .bashrc as recommended. The terminal just sat there like it was doing something, but the X server window never popped up, even though it was running after I launched it using XLaunch (and setting the Disable access control setting).
Trying WSLg – WSL’s new native GUI server – it’s kind of working, menus are offset. Same problem as ROOT on Windows 11 WSL2 / WSLg, but that apparently never got solved.