Cape is rendered too dark if the player is sprinting and has an arrow in it

The bug

While there is an arrow in the player, a cape becomes darkened when the player runs. 

To reproduce

1. Have a cape

2. Enable third-person camera

3. Sprint
   → ✔ The cape is shaded correctly

4. Hit yourself with an arrow

5. Sprint
   → ❌ The cape is rendered too dark