Dropping an item with a stack size higher than the server's causes the server stack to drop and everything else to be deleted.

[Severnarch]

When you drop an item, if the stack count you're dropping exceeds that on the server (e.g. a stack of 5 Soul Pearls being dropped when the servero nly allows stacks of 1) will cause anything excess to be removed (e.g. those 5 pearls being reduced to 1 on the ground and the other 4 to be deleted)

[Severnarch]

This can still be done by drag-dropping an item from the inventory!!! oh how did i overlook this!!! i totally didnt forget drag-dropping existed at all no definitely not

[Severnarch]

i can NOT find what controls drag-drop dropping and the most ive done is remake the dropitemprefix function 😭