When an observer is placed by a structure block, it fires once. This doesn't happen when an observer is placed by hand or by a command block and is very annoying as it breaks things like flying machines or piston doors.

Steps to Reproduce:

1. Save a structure containing an observer.
2. Load the structure.

Observed Results:
The observer fires.

Expected Results:
The observer does not fire.

Notes:
I have tried to find a workaround to this but have not managed to. It has become very hard to copy redstone because of this.