Moin Matthias,
from one bean-counter to the other : You are right and it happens to me, too. I think we were trying to make it a bit easier if the clickspots don´t move with the switches, because often you will then have them move in front of other clickspots... especially when looking from an oblique angle. So the logic was like this: Moving click+drag for those switches that have more than 2 positions, clickspots at the "base" for those that only have two positions (click-to-toggle).
Once you get used to this (and memorized which ones are 2 vs 3 position) it works pretty well - especially if not trying to click from an acute angle. But I agree that it is not 100% intuitive.
We will see what we can do in the future - but we´d have to update all switches at once, not only a few, because it would get even more confusing...
Jan