If you look, there was a thread on this some time ago, and I think in beta when a comment was put forward.
(I comment on one cant remember which)
But its hardly something that will be a priority atm, It'll be down in the bug fix list or more likely another small issues list.

They have done a load of work on the optimization front it seems in this patch, so just wait or at least don't do daily bumps on an issue that isn't stopping you playing, it annoys me, but its hardly game breaking.