Yep-- always practice "Tap, Rack, Bang.."If the bolt is closed, loaded mags require that extra tap. I don't really see it as a problem, it's just part of the loading procedure. Ram that thing in there good and tight, tap to be sure. If the bolt is open as if you were doing a functional reload, it shouldn't be a problem.
I wondered about it at first as well, but has occurred for every mag (pmag, lancer, usgi etc) and across multiple AR platforms in my experience.
As you're mixing apples & oranges when you mention "my soldiers" and "at work", can you clarify? Are you military, contractor or LEO?Personally i carry pmags at work so there is no issue with 30 rounds in the mags.