Cannot move, withdraw or interact with some stacks in Guild Bank. Noticed this started to happen after depositing items from cross realm & cross faction characters. This is mainly happening to stacks that already existed in the Guild Bank that items were added onto (for example, cloth stacks). Hope this helps troubleshoot.
Update from today. Logged in and all those stuck items from yesterday are now gone from the Guild bank. 100’s of items in stacks just gone. Lucky for me (but probably not others…) most stuff was older legacy items and I will survive this, but there is definitely issues depositing items on top of existing stacks when using characters from different servers or factions.