I think it would be better for the game to be also controllable with the WASD, it would solve the "scroll the page" problem and maybe it would fix the jump input buffering.
Absolutely, I got tired of typing it in my feedback this game jam but I do not like when I'm forced to use my right hand or arrow keys in games without a rebind option, I haven't quite understood why most people go against this gaming standard so often.
To be honest I don't even know why that's happening in the first place, yours is the only game so far this jam that its happened with. I just went full screen and pretended it didn't happen as I didn't want to blame your game when it could have been the website.