My vote would be to not sink a lot of time at this moment (like I said, afaict the danger of "stealing" was there before and apparently never really caused too much breakage in practice), and…
@pablovazquez could you look into this?
To me the empty bar with the ...
button is concerning. Why should things be put into some "more"-like popover when there's plenty of space available?…
I should be done with the buildbot preparations for now, patch for this is submitted for review (non-public devops repository).
Wait I see that these properties were introduced just now. Then my question is, what are these properties doing? That's not immediately clear to me.
This seems like a good change. I agree that the disabled hint should be set here, otherwise it's hard to understand why a button is disabled.