Code review comment for lp://staging/~mzanetti/unity8/fix-drawer-dragging-esc

> Yup, works fine except a minor visual glitch I'm observing with launcher
> "always visible": when you're dragging the appdrawer back and hit Esc, the
> launcher itself will quickly wiggle back and forth, as if it were hiding.
>
> Also, a test would be nice :)

fixed both.