Hello!
We have a following problem in our application.
While moving main application window there is a visible trail.
Can you suggest how can we remove this trail?
Our application uses custom style. Can this be a reason of this issue?
It seems to me that an application is not responsible for re-drawing area's outside of its windows. So I would say, that you have a problem with windows and/or your graphics drivers at hand. Do other applications also show similar problems? Other Qt based applications?