Playing Stoneblock 3 (with version of the mod being functionalstorage-1.18.2-1.0.7.jar), I noticed that I was unable to remove upgrades from an Ender Drawer, in particular a void upgrade that I placed on it by mistake.

As you can see on the bottom right, the drawer displays the upgrade:

In the interface, there's no void upgrade:

Note that it only occurs when the upgrade is placed on the Drawer outside of the interface. I can remove it if I put it manually in the utility slot.

This is done by design as the ender drawer network gets the void upgrade, I will try to find a solution to remove the upgrade from the network