Thanks for playing! The black part should be caused by the cubes getting too close to the camera, since we are using an orthogonal camera; you might be able to get rid of the bug if you press "F" to focus on the player.
The camera rotating when the block rotates is a bug that I didn't figure out how to fix lol. It's caused by the game thinking the player has moved to a new block and trying to focus on the player.
Thanks a lot for the feedback!