Quote from NosetotailI tried last night to g and u back and forth and like I said, only one hotkey works at a time. It's either g or u but you can't use both back and forth. This gets really frustrating when dealing with multiple units that you are trying to get to do different things, especially when one or a few units are on a suicide raid and you are simply trying to turn them around but you can't because the icon is toggled to ungarrison and the g hot key does not work.
I have this problem too.. but its not really problematic. Just reclick/ctrl+(number of unit)/Defend/Attack button. And there. Micro.