Per-Vertex lighting is currently not supported, but it's a planned feature

Odd, it should work. What does your node setup look like?

Maximize the window or increase resolution of your monitor. Perhaps rotate the monitor 90 degrees and go with a tall layout instead of a wide one?

If none of the above works, you may need to buy a new, bigger monitor.

(I could also add a scrollbar)

It's a planned feature! Ideally, you should have two dropdowns instead of one, so you can combine yourself :)

This is due to deserialization bugs with component mask and append

Edit: This should have been fixed a long time ago. Not sure when, but let me know if it happens again :)

Both Clamp Constant Clamp was implemented in Alpha 0.13 :)

These issues should have been fixed now, let me know if it happens with the latest version :)