Ah, good catch. That's because normal maps doesn't have an alpha channel when unpacked. I should hide the A channel when it's marked as a normal map!

Node comments will now be displayed on nodes that are used multiple times, as of 0.24 :)
(Since the other nodes are put on the same line)

It's not exactly what you requested, so if you feel more than that is necessary, let me know!

I did plan to put the comments in the shader code, but I never got around to it. I will do so soon :)

Does it still happen if you restart Unity?

Alright, I'll close this for now then! Reopen it if you bump into it :) It might be because of some completely unrelated issue

Hey Rob!
You can make flow maps in Shade Forge as it is, but I've planned to include a flow map shader in the examples once it goes 1.0 :)
All the math you need is here: http://www.valvesoftware.com/publications/2010/siggraph2010_vlachos_waterflow.pdf

Looks like precision issues, I'll look into it in a bit!