[Bug] Character animation turns abruptly when turning and reversing

[Christopher]

When reversing while holding the left or right key, the character's head animation spins around abruptly instead of transitioning smoothly. This happens whether I am stationary or driving forward and immediately switch to reversing while keeping the left or right key held down.

Can you fix this bug.

[Alayan]

This issue has been known for years, and it's already tracked at: https://github.com/supertuxkart/stk-code/issues/5564