I see. That's a trickier thing though, and will probably take quite some time to make, unfortunately.

If you disconnect the Skyshop nodes, does it work?
If you disconnect the Tess/Disp node trees, does it work?

Hm. I think you may need both when doing deferred. Try plugging something into both gloss and spec, and make sure it's only one channel instead of three or two. (Use the R output rather than the RGB output)

No idea what could cause that, unless your mesh simply get seams when you offset it. Does vertex offset do the same?

Are you using multiple monitors?
Any obscure mouse solution?
Anything else that I should know about?

Ah, I had that problem a while back as well. I'll need to look into that soon

There's no console in SF, just wanted to make sure you were looking at the right place :)
Put the shader up on pastebin and I'll have a look

Did you check the Unity console? (The one outside SF)

That's really strange... Are you 100% sure you aren't getting any errors? As in, when you open the shader

Are you getting any errors in the console?