Looks like there's an issue with PS5 controllers on our WASM build, if you use a PS5 controller and experience weirdness you'll have to use a keyboard in the meantime or switch to an XBOX controller.
We're working on a fix now!
The fix is out now, an explanation for the fix is here Hotfix for PS5 Controllers! - Sign My Petition by Studio 9Bs thanks for playing the game!