Good point! Sorry, I forgot where I was, but I think it happened during a cutscene or when a cutscene just ended. After restart it happened again and I gave up =(
I think this will be difficult to identify then, however since this is a game built during the jam I expect it to break at places that I could not play test. One known bug is when you press space quite fast trying to skip things and it crashes things. I did not have the energy to fix it but I will assume this is the same thing that happened.
However (and I would like that) if you still feel like playing the game again and skipping the story all together then you can press the ~ (tilde) key on your keyboard. It is a built-in feature to allow me to debug levels faster.