Please fix sorting by group in adminCP Member view

[LiquidFractal]

Hello,

Could you please fix the option to sort the Member list bu Group in the adminCP?

Short version: it doesn't work.

Long version: at present it doesn't even group different member groups together - I have one "Client" listed 2 pages down from other Clients, and there is nothing even remotely resembling alphabetical order.

Thanks!