Hidden feature?

[NiaSwift]

When I hold the (left or right) ALT button while hovering over an item in an inventory, it adds info relating to the nbt of the item at the bottom of the tooltip

It's a bit annoying because there seems to be no way to disable that feature in the config, and the mod only adds one keybind to the control menu which is just the "Show/hide durability display"

I only found it because I was using a different mod specifically for showing the NBT in the tooltip of an item, and I wanted to set it to ALT but noticed that it already had something and it took me like an hour to figure out that it was Durability Viewer that does it