This may not be a StitchUI problem, but one of the many Nymbia-AddOns is causing it: when I fill the StitchUI queue from Manufac, Quartz is sometimes showing negative numbers on the tradeskill-progressbar. Seems to happen when I queue 2 batches and delete the 2nd batch while the first is being progressed.
Actually, this even happens when I do not delete stuff from the queue. Just adding 2-3 items produces this effect for me. With a full queue, the Quartz's tradeskill timer bar starts to show complete bogus after a while. o.O