Enemy won't throw physical moves against a Pokémon w/ Mummy

[Ocho 12]

It seems to happen on both singles and doubles, the opposing Pokémon will not attack my Cofagrigus (Trick Room, Will-o-Wisp, Shadow Ball, Destiny Bond) with any damaging move, just in case this happened in the Ice Cave field and Snowy Mountain field, it would happen against the Meteor grunts and it would happen to Aster as well (his Solrock set up dual screens and sr and would switch to Krookodile who refused to move), if they only have damaging moves they wouldn't move even before I threw out any move, and if I switch to another Pokémon the opponent WILL move next turn.

BTW this happened after I updated to the AIpdate

 

EDIT: So I did some further testing and the opponent will still use Special Moves, and if I switched into a physical move (and activate Mummy) then the opponent would make moves just fine. 

So, it is definitely the AI trying to prevent Pokémon to be afflicted by Mummy.