Code review comment for lp:~mzanetti/unity8/fix-laggy-launcher-dnd

Looks great! Tested and it's fine.

 * Did you perform an exploratory manual test run of the code change and any related functionality?
 Yes

 * Did CI run pass? If not, please explain why.
 Eh, for other reasons.

 * Did you make sure that the branch does not contain spurious tags?
 Yes