After a while, the parts behind some (sometimes all) Title Bar Buttons will turn black and Display Fusion at that point becomes inoperative, and when that happens, if you click on the black area, Windows notifies that Display Fusion is not responding and Display Fusion crashes completely. Before clicking the buttons after this happens, if you close/minimize the window, the black box and button icons where the Title Bar Buttons were will still remain in view, despite the window not being there. I restarted Display Fusion afterwards multiple times, now, and it happens every time after a bit. As of right now, I'm not sure what specifically causes this to trigger.
Also, I'm using a custom Windows theme, so that might have to do with this problem.

I was wondering why my cores were going crazy in Beta 2, with DisplayFusion taking up a lot more memory than it usually does (constantly taking up about 20 times more than the idle of DisplayFusion regularly), when I woke up today. I just updated to Beta 3, and things looks to be back to normal.

PS: I love the new wildcard feature you've added to v4.0.1 Beta2! =D