Bug on Lightroom 4.1 Adjustment Brush

I have been having this issue in my Lightroom 4.1.
This is how to duplicate the problem:
Select an image and use the Adjustment Brush.
As an example, select Shadow and enter a value, say 10
Try scrolling the mouse button back and forth.
Normally, LightRoom would crash after doing this. If it is not doing the same on your PC, then I guess the issue is isolated to my PC only.
