Eye of Agamotto falling

i got this as a team up and the enemy did a match 4 with the Eye getting removed. It’s not supposed to be matched or fall. What gives?

The Eye itself can’t be matched, but other tiles on the same row or column can become a match-4 that will clear it.

Gotcha. I thought “can’t fall” covered that, but I stand corrected!

It can also be destroyed by skills that can destroy any tile type, such as 4* Wolverine green.