I don't know since when this bug has been present, but I just noticed it using the latest devbuild (aaf8323eb294b1a5ab258b729df714488be11c2a).
Using Vulkan, if you go to Player Setup and change colors, they don't get reflected in the player preview box, instead it uses the last color that was applied to the sprite (caching related?).
Steps to reproduce:
- Use the Vulkan backend.
- Go to Player Setup, and change the player color.