Strange new bug, seems to occur recently, as I've changed the title on two toons today and both toons have had their outift designer slot invalidated. ie. The outfit states it is as designed, but the char is wearing the equipped gear (which is not attractive).
Please investigate, as this is quite the annoyance.
The only workaround I've found is to recommit a new outfit to the slot. Likely I could buy a 2nd slot and alternate between the two, but seems like a waste of creds/ccs.