Very amusing idea! And very intuitive interface. Random note: if you replay the game doesn't properly reset, it keeps going back to 7:59 with one alarm.
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I was able to figure out what the issue was. Turns out that the buttons on the pause and ending screens (mostly the ending screen) can still be clicked when they are invisible, and it seems that you were accidentally clicking on the "Replay" button from the ending screen. I uploaded a fixed version of the game, so the issue should be resolved. Thank you for playing my game and the feedback.
Watching your VOD, I was able to figure out what the problem was. From what I can tell, the issue appears to occur when you click on the game, particularly on the web build. I've published a fix that should prevent the issue. Thank you for playing my game and (accidentally) helping me fix some bugs.