It would be great if you implemented a feature when having your bank open so that it would be possible to right click and select “Stack all items” – that would look for duplicates and stack them according to the stacking rules.
If you have many items in your bank, it can sometimes be hard to see if there are duplicate items unless you are very structured from the beginning.
Implementing this should not be that hard I assume, since you already have somewhat the same feature implemented in “Deposit all collectibles”.
Thanks