Ive had it once some items I had just removed from the bank and then could not take an identical item I was trying to take out some samples instead I had to buy some from exchange. Its not a very nice thing to have happen. And I'm a Fleet Admiral.
Yep, posted about this several weeks ago... filed a GM ticket about it and they sent me a boilerplate response about logging out of the instance for 20 minutes and trying again, something that has zero bearing to the problem. =)
We're having this problem in my fleet (TERRAHAWX), but someone posted a possible workaround yesterday. I haven't tried it because I don't have unlimited access to the fleet bank tab where we store our samples, but we do have some bugged stacks that dont seem to be movable.
The suggestion was to drop a different item on the bugged stacks and see if that shifts the sample stack to your bank.
If anyone tries this, please post here so others can know whether or not they should try it.
I posted a work around for this months ago. Drag an item over the item you want to move and it should swap them. It took the person a few tries but then it allowed them to start taking items from the bank and able to move them around.