The game seems to be rendering in portrait mode on Firefox. Because of that I tried to resize the window so that it matches a phone with devtools and this error kept happening every time I jumped (image below)
It was hard to understand what was going on, I guess I was avoiding a gray worm and picking up the "cogs". Then I went to the center of the map and the game ended (?) I wasn't sure.
I was vibing with the music :)