Double chests make two sounds when opened for the first time

Summary:
When opening a double chest for the first time, the opening sound plays twice.

Steps to Reproduce:

1. Place two chests next to each other to create a double chest
2. Open the double chest

Observed Results:
The opening sound plays twice.

Expected Results:
The opening sound should only play once.

Video:
https://www.youtube.com/watch?v=a0e0PswFj1c