I am using the V2 scheduler and have the timebox time limit enabled. The issue happens when I leave the editor open after adding some cards and go away then come back to Anki after the daily cutoff hour passes to find that the timebox pop-up appears, and after closing it, Anki takes me to the reviewer and shows me a card!
I’ve not figured out the exact steps to reproduce it yet, and so far failed to reproduce it in a test profile with the latest master.
Maybe it has something to do with the main window state wrongly set to review, then reviewer.op_executed() is executed, which is resulting in a card being shown?
Update: the issue happens regardless of whether the editor is open.
I was on the congratulations screen today when at the cuttof hour and the issue didn’t happen. Not sure exactly what is triggering it sometimes, but I guess it happens most of the time after I add some cards within an hour or so before the cutoff hour.