I notice that I can still type in the putty window of the active tab, but Royal TS will not come to the foreground (all other MS WIndows' Windows stay ahead of it). Even if I close all other programs/windows (except X11 window), I cannot switch tabs on Royal TS, cannot access menu on Royal TS, etc)
It's as if any popup/window launched by Royal TS treats that as modal.
I have several SSH tabs open in Royal TS. In one of them I'm using X11 forward, and have an X window open.
As soon as an X window is open, Royal TS becomes inaccessible (as if the X window is modal). I can't even switch tabs in Royal TS. Is there a setting I need to change?