Steps to Reproduce:
- Hold Crouch while being underwater;
- Start swimming.
Although the player is swimming, they're constantly sinking, and the legs move a little inside the body, as the game is trying to layer the crouching animation on top of the swimming one.
The player swims normally, without clipping or sinking.
Screenshots/Videos attached: Yes
Notes Once the player is swimming, the crouch button doesn't need to be held for the bug to be active.