Update.
Having emptied my bags following the above report, I have acquired further loot and because the Clay Ring of the Aurora (iLvl 24) is BoE, I was given an alert by the WoW Client that my Dread Pirate Ring (now iLvl 33+) was trying to be replaced.
Until the problem is resolved I will, sadly, have to disable Dugi as (a) the most likely candidate and (b) I can’t live without ElvUI’s larger impact on my play experience.
Really hoping this can be fixed. Your add-on is the the simplest, most compact and most handy questing tool out there, with no equal. 