I had not seen this! All good then.
Thanks for letting me know! This appears to be a bug in Godot 4.0.1. Sorry about that.
Should anyone be interested, here's a link to the issue: https://github.com/godotengine/godot/issues/75681.
Nice game! I liked the audio and visuals, and the idea of taking bullets from the enemy gives a good incentive to move around and learn the bullet patterns. I did wish you could move faster though, so you could catch bullets that passed you too.
