Per-vertex mode has now been removed, but will most likely come back at a later stage, after the initial release. I'll mark this topic as fixed, because you can't get these errors anymore (Since the feature has been removed)

Currently, screen coordinates are per-vertex. I'll add an option to select per-fragment instead

Edit: This is now fixed as of Beta 0.16 :)

This behaviour was sorted a long time ago. Shaders don't compile anymore when required inputs are missing

Hm, I haven't tried it in 3.x. After having Googled around a bit, I suspect this has something to do with meta files. Not sure how to solve it though. Shader Forge should be 3.x compatible in the end, so I'll mark it as a planned fix. Are you able to test it on 4.x?

Edit: Closing this due to being very old and probably not a problem anymore

My general reasoning is that the most accessible button (LMB in this case) should probably be assigned to the most common action. I believe panning the camera is more common than node selection. Anyhow, this is perhaps something that the user should be able to specify themselves in some config :)

Edit: As of Beta 0.15 you can pan using MMB

This is due to the normal map not being marked as a normal map in the SF shader, thus not unpacking the normals when rendering the shader. I'll rename this task to be about a clear indicator on the Texture nodes to actually show if it's being read as a normal map or not :)

Edit: This has been fixed in 0.15, where there is now a checkbox for what type of texture it's supposed to be, as well as which default value it should hold when unconnected

Ah, that's a good point, perhaps it should be greyed out :) Will polish this behaviour in the coming beta

Edit: On second though, you might want to be able to write to the alpha channel for special effects, even when using additive, so I will keep it as is! Thanks for the suggestion anyhow.

Fog overrides has now been added to Beta 0.15 :)

It's not really broken, but it's interpolating per-vertex rather than calculating per-fragment, which will look bad on low-poly objects. There should be a per-fragment option. I'm renaming this thread and switching it to a feature request rather than a bug :)

Edit: There is now a checkbox for per-pixel screen coordinates as of Beta 0.16!