After the latest patch 9th June, I can't move while executing combos and I stay stuck sometime after the final shot. Not like several seconds but just enough to make me hammer my keyboard and wonder why I'm not moving. Just me or? Really annoying, that's for sure.
Moving while executing a combo aborts the combo, I guess Funcom just wanted to make sure you do get your damage in when you try to do a combo (as aborting the combo rolls back all the damage the combo appeared to do until that point too) and thus changed the mechanic from "moving aborts" to "you can't move and unwillingly abort".