For processing the mouse events in the preview window, OpenGL is not used. The mouse events are processed by the window manager and from wxWidgets. see also bug #797370 So check which window manager and which wxWidgets version is used.
For processing the mouse events in the preview window, OpenGL is not used. The mouse events are processed by the window manager and from wxWidgets. see also bug #797370
So check which window manager and which wxWidgets version is used.