Spyro the Dragon - Vanishing Key Glitch, Peacekeepers World, Dry Canyon

I caught it on video when I picked up the key but when I arrived at the treasure box it wouldn't open. =(
The key vanished. I even went back to double check that I'd picked it up. I had to close out without finishing the level.

Vanishing Key Glitch, Spyro the Dragon, Peacekeepers, Dry Canyon, Pt. II
After re-entering Dry Canyon, I did find the key where it was suppose to be and able to finally open the treasure box.