Impossible path in passive tree after refund

I've been playing around with refunds on the passive tree on my monk.
Some points I activated disappeared and the tree now just skips nodes.
I remember activating the node to right of the int node I marked with the red arrow because I wanted to take that path instead. And then undoing the crit nodes in had active on the path it's now drawing to the node I marked with the red arrow.
After confirming the points this was what I was left with.

It turned out to be a UI issue?
When I logged in the next day the points were reverted again and I had to re-undo the crit nodes.