All nodes turn to selected and grabbing one of them moves every other node too

I found this bug where all nodes turn to selected and grabbing one of them moves every other node too. I was not able to find what causing this behavior or reproduce it on purpose.

There is screenshot of this bug:

![bug-graph](https://user-images.githubusercontent.com/14349169/102788745-69482c80-43a3-11eb-8789-77ff1f1d2d8d.png)
