I did not have this problem in previous versions. When I try to browse detachments belonging to the same area or army with space or ins (although for me it's the home) key something weird happens. All the event cards start to go up from the bottom left of the screen with each key press. I was also somehow able to drag the text in the game log with my mouse. It also made the UI "transparent" so that when I tried to click the plus icon in the reserve box it selected the area under it. Oh and log, messages and menu buttons moved to the middle of the screen.
btw calvinus being a software engineer myself I heartily recommend getting some sleep and not doing too many 12+ hour days. That way you fix one bug and create two new. You will also start to act and look like this guy
