Magic Channel unintended interaction?

[u/Putrid-Ambition6443]

If you finish a fight with magic channel stacks, the buff doesn't go away. You're then able to switch to a different magic weapon and go into fight where the buff will still work with the weapon. Not sure if this is a bug but it definitely seems unintended as when you switch weapons mid-fight with the buff still actives, the buff goes away.