Absolutely adore the app and its been wonderful in helping me get writing. I have encountered one wildly weird (if frustrating) effect when I do this and play a game on controller at the same time
So for context I play FFXIV and during long queue times I'll write and when I'm done with my duty I'll go back and write more, only to find that Stimuwrite has closed. I noticed in the middle of a dungeon that it was opening menus while I was doing my rotation despite Stimuwrite not being the program actively being used at the moment.
Weird but manageable during 1.12! I just get what I've gotten during the session from the Recover menu and put my word goal back where it belonged and tada I'm back at it for another eons long queue time in XIV.