Thanks so much for playing, and all your feedback! Your notes about the hitboxes (both obstacles and attacking) will definitely be getting addressed in a update patch post-jam. They've been the most common request/critique by far.
I'm sorry to hear about the bugs you experienced! It's the first I've heard of this so far... I attempted to reproduce this problem on my system in Chrome, Firefox, and Edge, but didn't run into that issue. Could you tell me what operating system and browser you were using to play? It's probably an engine issue unfortunately, but would still be helpful to know.
If you have a moment, I've made desktop versions for Windows... if you are using Windows, can you check and see if that bug still occurs for you?
I do plan to update the full game with improvements based on all the feedback I've gotten so far! There'll also be a stage 7&8 update coming too, I hope you'll check it out!