After speaking with Starsis, a monk on my server, it seems there's a link between this issue and the issue that is causing melee to overflow onto nearby mobs and wake them if mezzed. He's the first person I know of to find the link between the two, and he even tipped me off to a scenario he was experiencing that should give us a method for testing.
Here are the few posts I've made over at PEQ in regards to it. Hopefully his information helps to get this ironed out.