What about it?

And which Unity version?

What's your target platform in Unity, which renderers is the shader targeting, and which Unity version are you running?

Are you 100% sure you changed both to PBL, and not just the one on the right?

What does it say on the right of the instruction counters?

The planets are slowly aligning

I did, sorry, fixed now :)

A toggle in the UI is a tricky thing, because it will fragment the userbase when people take screenshots of trees in the wrong order

The primary reason I kept it right to left was to make it immediately recognizable for Unreal 3 users. Ironically, Epic themselves reversed it only in the last month or so.

But yeah, as I outlined in the post - another advantage is that the preview is on the left side, which makes sense hierarchally.

Shader preview <- Main node <- Your node tree <- Node browser

Reversing it would make it look like this:

Node browser -> Your node tree -> Main node -> Shader preview

I would be uncomfortable with the 3D preview on the right, and if only the nodes themselves are reversed, it's no longer in a neat order. What do you think?