Spent waaay too much time on this, but it hooked me, good one
I think I found an issue in web browser window mode?
1. Click+hold a room,
2. Drag the cursor outside of game bounds,
3. Release hold there,
4. Move cursor back in game bounds
This results in an autoclicker. It needs some finagling when positioning the cursor back, but I could leave it for as long as I'd like on auto.