Cape will still be showing in spectator

^{Update by [Mod] LateLag}
Steps to Reproduce:

1. Equip a cape;
2. Create a world with the experimental Spectator toggle enabled;
3. Switch to spectator mode using commands;
4. Switch to third person view.

Observed Results:
The cape is visible.

Expected Results:
The cape is invisible.

Screenshots/Videos attached: Yes

Notes:

---

Original Description:
Idk