Proteus - Bug?

Not sure if this is a bug, so posting here first for opinions.

I don’t think I’ve seen this before . . .

My Proteus currently deals 109 damage over 3 turns. That damage is actually showing as 65 damage, regardless of the number of enemies it affects, up to three. So, if I activate him and he affects 3 enemies, they get 65 dam each. If I activate him and he affects 1 enemy, it gets 65 dam.

Is it supposed to split that 109 dam like that?

That’s not going to be very effective when he maxes at 327 dam over 3 turns and it splits it out to 195 or something.

Thanks
Mad Mare (Maddie)