Quark has two features that conflict terribly;

• Quick Armor Swapping (Shift-right clicking an armor stand will swap its armor set for whatever armor you're currently wearing.)
• Uses for Curses (Player Heads with Curse of Binding will show the player model of it's owner on an armor stand.)

if you have keep inventory on and you crouch right click a player armour stand you just can no longer wear a helmet ever
I think maybe you should just have both be curse of vanishing, that or just make curse of binding not work on player heads

Alternatively, disable quick armor swapping with an armor stand that has any curse of binding items equipped. Or, make it impossible to take those items off altogether without breaking the armor stand.

It's nice for Curse of Binding to have its uses.

Besides, there's other ways to mess with other players on a multiplayer server using that curse. Assuming someone comes to your base without any armor, you can force them to equip armor using a dispenser. That's just Vanilla behavior. Instead, maybe there should be a different way to get rid of these items with keep_inventory on.

Yea, having it bind to the armour stand is a better solution and how it should be already to be fair, hopefully they can fix that in quark