Yeah, I ran into the flying in some direction with no input bug once or twice before. I believe it's mainly because of key inputs being used too fast as there is a 4 or so frame area where when you collide with something, if the keys you're pressing change, it will read them wrong. (to let the player move in more than one direction, but correctly stop when colliding with an object, it checks what buttons you're pushing, then when colliding, it will adjust your speed based on that, but if the keys change between it checking the amount of key and adjusting your speed changes, then it will cause the issue)
It usually corrects itself when you collide into something new, but I never got the issue with the raft as even when I forcefully put the dinosaur in the water without the raft, he wouldn't have it.
I'm glad you liked it and sorry that the movement was a little wonky. Hopefully it was otherwise fine!