Acrid not damaging Corpus enemies properly

[Grenneloch]

I've noticed on several occasions now sometimes Corpus enemies absolutely refuse to take any damage from the Acrid (as in, it just starts popping up 0s). I've noticed it usually happens after a Shield Osprey has buffed the unit (either during or after its connection to the beam). It also appears to be a 50/50 chance of shooting a Shield Osprey does the normal damage, or it ticks for 0 and does nothing.