Same symptom as #167
This just happened to me on Windows 11, Opencloud desktop app 3.0.2.2006. I created a space and added my user account to it. The desktop app popped open and on top of other windows, despite it being previously closed. (I think it was the new space that triggered it; I had also uploaded some files via the web UI within the previous five minutes, but the space seemed to trigger it within a few seconds.)