I press manually CMD+W) with the help of that Mission Control Plus app. That is, I can still close windows under my cursor if I use the keyboard combination (i.e. Having also BTT, I set up a trackpad gesture that sends CMD+W keyboard combination to close tabs/windows under the cursor (this becomes super useful in web browsing by the way.) However, what I noticed is that, in mission control, BTT trackpad to keyboard transformation does not stack with the Mission Control Plus app's features. All you have to do is move your pointer to the window you wanted to be closed and press CMD+W to close the underlying window. I have an app called 'Mission Control Plus' that lets me close the window under trackpad pointer when I am in the mission control. If you encounter a crash, please attach a crash log from the macOS Console.app from the 'User Diagnostic Reports' section. Note: Before bug reporting, please make sure you have tried the latest (alpha) version of BetterTouchTool and that you have already tried to restart your system :-).
