I was adding items to my Warband bank . I would do one character then logout and onto another character. I was adding cloth, leather spider silk to stacks which already existed. All WB slots were full and then when I logged in another character many of my slots were now empty and approximately 30k was gone from my gold. The items that are gone are low level crafting items. I do not use addons. I reset the cache, wtf, and the interface. Restarted, logged back in and items still gone. Been several days and items still disappearing. I have since removed all items.
Nice in theory but Warband bank has issues