NodeGraph: How to turn off node SNAPping?

Hi, All.
I’ve been using notch for quite a while by now and there’s something that is starting to annoy me: inability to turn off node snapping in the nodegraph window. There’s this SNAP button combo at the top bar, but none of the buttons seems to have any effect on the nodes. Any ideas how to actually do that? Perhaps it’s just another bug? Thank you.