When dragging a window, I have to wait about 2 seconds doing nothing (just pressing the left mouse button), before the window starts moving. Before that, it just stays at the old position.
I have located the problem to be that no XEvent is sent at all when starting to drag a window, although at least configurenotify events should have been sent.
I gather this could be a window manager bug, but I’m using the fvwm window manager, which is extremely old and trusted, so I’m kind of doubting that. I haven’t seen this problem in other programs either. But on the other hand, when trying gnome (I think it use sawfish?), dragging works fine. I haven’t tried any other window managers.
The problem doesn’t appear when using the native window title bar, or by dragging using letf alt + mouse.
Any ideas what might be the problem? I would very much like this problem to go away, because it seems like the program is freezing when the window is not moving.
If it is an impossible problem to solve (or at least very hard). would it be much work to detect at startup whether the problem will appear, and in case force use of native window title bar?
What happens in other window managers?