That's quite an interesting look behind the scenes. Ever since someone mentioned that Gutter Grime was the cause, I've been trying to think of how that could possibly break these equipment, but I never would've guessed that was how it happened.
That bit about Falco Spara was also interesting. It also reminded me that multiple copies of [[Muldrotha, the Gravetide]] don't work properly (or at least didn't a couple months ago). Casting one spell of each type removes the option even if you have multiple Muldrothas that should each be able to cast one. I wonder if that's a similar issue to Falco Spara where they all try to do the same thing, or if it's because of Muldrotha's unique UI...
I believe that had been a UI bug, where the client was improperly batching the Muldrotha permissions in its presentation of your actions. #wotc_staff