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Windows 10 Resolution and UI Scale Leads to Mouse issues
Whenever I move my mouse down and/or right while in character (survivor or killer) the game doesn't register my mouse clicks as if I wasn't clicking inside of the game at all however the game does not exit Fullscreen when this happens.
Here is how I think you can reproduce this bug:
-Have a 4k Resolution Monitor
-In Windows 10 right click on empty desktop to find the Display and Resolution settings, there you set the main Monitor to 4k Resolution too and also set the UI scale to 200% (this must be the monitor you run the game on)
-Go ingame and move the camera down and right while trying to left/right click the mouse, It should show no reaction to the clicks, however if the mouse is still or going the opposite direction its should work just fine.
Hope this helps.