I'm pretty sure at this point that it comes down to the browser you are playing the game with; I've had a couple reports about this in my own game. One of the players having problems mentioned he was using Opera GX, which I couldn't find any specific compatibility data about (it does look like vanilla Opera is supported though).
If you want to temporarily switch browsers for the purpose of playing the jam games, I never had any issues with Firefox. I'll put my submission link here too, as something convenient to test with (here comes the shameless plug, lol) - https://itch.io/jam/gamedevtv-jam-2024/rate/2739551