Already decorating crash when teleporting

Put the summary of the bug you're having here
A "Already decorating" crash. See the crash log

What I expected to happen was...:
Normal gameplay

What actually happened was...:
A fatal crash

Steps to Reproduce:
1. Load up a world
2. Teleport somewhere far away
3. Exit world
4. Load world again
5. Game crashes (not sure if relevant to the teleport)