Not sure if it was intended but I actually kinda like how the paddles rotate when you move them to the top and bottom. Adds an interesting dynamic to the gameplay. Could be cool if their rotation changed after every hit for added difficulty.

I like the simplicety of the game. Pong was my first game i tried to build, so i can relate. I also recognize the behavor of the paddles at the end. I would say its not a bug, its a feature ;)

I like it as a start but you need to look into a better main loop to allow both paddles to move at the same time. Good job.

the paddles kinda glitch out at the top and bottom, but good job otherwise!

I would have attempted to replicate the paddle behavior of the original, talking about the angle that the ball bounces off of the paddles. Counter intuitively, you are supposed to remove the ball's y axis velocity whenever it bounces off a paddle, and just use the y position of the paddle relative to the ball to make a new y velocity. Also, running a paddle into the wall causes it to rotate. Not sure why the paddles move in steps either.