Nightgaunt super glitch

I don't have a log to go along with this, but every so often when I conjure nightgaunts, I bind them with the correctly spelled target's name and they just sit there instead of flying away. So this time I tried to conjure another and bind another, and it said I already had one bound (can we get a timer on this in the affect list please?) Anyway, 5 seconds ago the two of them faded at dawn and the mud immediately crashed.