This is not the same issue as the one in the merged mega thread. I use my wow in windowed full screen mode and ever since the new patch, whenever I have another window on top and wow in the backgroud and I try moving my cursor back to wow, the cursor resets to the center of the screen. This never happened before the new patch.
Here is a video on imgur. wow is in the background (full screen) and I have chrome open as a small window on top of it. I try moving my cursor from chrome back to wow and the cursor resets to the center every time it reaches wow.
imgur(dot)com/FxtjaWD.mp4