Dropped items wont stack after an item edits player or item nbt

So when I use the set nbt number tag on a player or item, it seems that it stops other items in the inventory from stacking with new ones that are picked up even though the data tags for the other items doesnt get edited and doesnt even show extra nbt tags in advanced tooltips, I am using the latest 2021.1 snapshot in 1.16.5