When you open and close a door fast, after a while the door will appear split in half for a second. It will do this randomly but it will do it almost every time.

Steps to reproduce:

1. Place a door
2. Open and close it really fast if the glitch doesn't happen do it again.
3. Eventually the door will appear in half for a second.

Observed results:
The door will appear in half for a second every once and a while

Expected results:
The door will appear normal