I received a “response” about this:
I’m Game Master [redacted]. Thank you for contacting Blizzard’s Support.
I’ve taken a look and we haven’t been receiving reports regarding this, which means it is most likely working as intended or has been caused by a recent update.
Taking this in consideration, we don’t have any workarounds at the moment nor can we provide any compensation regarding this since it is not a verified issue yet.
So let’s hope this phasing issue clears up when the prepatch events are over!