To add to this, they also cannot get the buffs from gathering reactant. I opened about 30 relics with her once with only her claws and a secondary equipped (also yeah you can't go claws only ever), and they never received a melee buff at all.
this bug happened to me too as of the dagath update. Very problematic when it happens during missions where you need to constantly swap in and out of operator mode. Although this time I am vulnerable to enemies