I discovered a glitch in Single Player Creative Mode that involves the animation of a chest closing. Here are the steps that I took:

1. Use either Regular or Trapped Chests. Ender Chests and Shulker Boxes will not work for this glitch because they cannot be made into double chests.
2. Place two chests adjacent to each other to create a double chest.
3. Tap on the double chest to open its inventory.
4. Exit the chest's inventory, but quickly break the double chest before it completes its closing animation. What is left is a regular chest that will remain in an opened state forever and not close on its own.

The glitched chest will never close until the player interacts with it again, after which it will correct itself and close properly.