Butterfree Gmax raid doesn’t allow me to select a max move for the first 1-3 turns.

I have now done 7 raids and this bug consistently happens to me. Everything about the raid is fine until my pokemon D/Gmax and none of my move options appear. It doesn't matter which pokemon im using. I'm trying to use Corviknight as a tank, so not being able to use max guard is having a detrimental impact on the team. I lost one of my raids with 13 people, and I reckon we could have won if I was able to get up max guard.

Without fail, I am unable to choose what my first move is. It always times out and defaults to attack. Sometimes I was able to choose my second, but other times I could only choose on my third move. One time I was unable to choose at all and could only choose on the second Dmax phase.