It seems when you finish a pact (0 uses) it stacks as an item on top of a fully charged (6 uses) otherwise matching pact, rendering the 'use' button useless. After exhausting the last use of a Dark Heart Pact my conduit ಠﭛಠ (https://nexusclash.com/clash.php?op=character&id=13762) recieved a fresh pact of the same type and author: the dark oppressor kaido (https://nexusclash.com/clash.php?op=character&id=14098. Attached is what i saw after kaido gave ಠﭛಠ a new one and he tried to use the stack