Hello. I was not able to reproduce the bug. Did you play the browser or desktop version? Which browser? The game was tested on firefox . I just tried it on chrome and found a weird sound glitch but beside that all was working fine.
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I played the browser version in chromium (87) on Linux. I think I bug-finished the previous level, and then this one had some wrong state.
Now I tried it in firefox and it worked very well. Completed 12 levels. By far the best game so far! Love the details (like when you step on a box in water, beautiful!) Only criticism I have is that controlling with WASD is very confusing, died numerous times to that, but controlling with mouse was fine. Great game!