X windows don't open on Catalina


I use ROOT 6.18/00 on Mac OS Catalina with the XQuartz X11 app. I run root from the terminal in which the DISPLAY is defined and commands like xterm open a window on XQuatrz. But root itself does not open windows. E.g., TBrowser t doesn’t do anything. There is no error message either. What to do?

Not sure what’s going wrong.
Is TCanvas working ?
Have you the same problem using the Cocoa version ?