Patch Notes for 1.0.6r:
Bugfixes
Fixed a bug where the 'idle XP' counter could, under certain circumstances, give you a level up every time it elapsed (every minute) after you had already reached max level.
(Also, on a somewhat related note, we've just updated the demo to 1.0.0 with a handful of quality of life improvements and fixes to bring it more on par with the full game.)