Operating system and graphics card
Short description of error
Nodes not in alphabetical order.
Exact steps for others to reproduce the error
- Make sure the Add-on Node Wragler is installed and activated (User Preferences).
- Go to to the Node Editor
- Activate Use Nodes
- Add a new Mix Node (Shift+A) -> Colors -> Mix
- = The nodes are sorted alphabetically (New feature for Blender 2.78)
- Switch Node (Shift+S) -> Colors -> Mix
- = The nodes use the older sort (Blender 2.77 and earlier)
I geuess there are more of this cases. I didn't looked...