By refusing to load, I mean that pressing Enter or Z to load the file simply does nothing, it doesn’t even kick me out of the menu. Starting a new file or loading other files seems to work fine. This persists even after refreshes, and it still does this even loading it just now.
What I was trying to do was just quit and reload as fast as I could, so since the file I was using was the top one, I was just mashing Enter once I hovered over quit. I don’t believe I was in the death animation when this happened, but I could be misremembering. After that, I was at a black screen with the HUD visible, so I opened the menu again and tried quitting. After that, I appeared in some gray area with only a partial background and the character quickly fell off screen. I once again opened the menu and tried to quit, and it got stuck at a black screen this time. After I refreshed the page, the file was bricked.
I don’t know how relevant it is, but I’m playing the web version in Firefox 148.0.2.