Node color stay active when graph is outside the canvas

[n4n5]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Current behavior

Expected behavior

Disable color on mouse out even it's outside the canvas

[Austin]

Seems like the pointer out isn't getting hit due to the canvas. This will be interesting.