[Bug] Constantly asking to update instances without changes

<img width="761" alt="screen shot 2018-03-09 at 1 50 05 pm" src="https://user-images.githubusercontent.com/16659448/37229306-d2f2c2b0-23a0-11e8-96df-73782b431af8.png">
#### Actual behavior:
http://recordit.co/jPvddsFWUD

Paddy seems to be flipping out whenever I interact with symbols. I am not changing anything, just selecting a symbol, then clicking off the artboard.

#### Steps to reproduce:
Can't attach - sorry. Hopefully it's user error. I'm clicking on a symbol that is being used elsewhere with Paddy. I am not making any changes. Click off symbol and get a message saying that instances need updating. Updating does not solve the problem, continues to happen.

