Currently there is a bug that will make it one heck of a pain in the rear for anyone to decorate, just in time for Halloween decorating. Please go to this post in the bug section and 'like' it, to draw more attention to it. Just use this post to 'like' and not my latter post about the bug, to add up the likes in one spot. https://forums.daybreakgames.com/eq/index.php?threads/bug-in-housing-and-plot.270870/
I do not decorate much , however I have a similar experience on my trader with bags i sell for some reason when i sell a bag a ghost image will remain so when i go to restock my bags and start taking them from my bank slot they will disappear on my cursor like poof .. I thought i was actually loosing bags but figured it must be this ghosting thing .. Not sure about you but I figure this is a sync issue because I bypass the launcher .. once i logged out and logged in using the patcher it fixed my ghost issue and so far im bypassing launcher again and no ghosting .. im guessing if you keep yourself logged in for a long time without using patcher your account can get out of sync.. this might be whats happening to you it might not .. I do not know if you bypass the patcher or not .. but it fixed my ghosting problem from baz ..