The trait screeching barrage is still bugged. This one was reported months ago.
It reads that when one if your other monsters attack it deals damage to all enemies.
However, when attacking enemies, landing the hit, and dealing at least 1 damage the trait FREQUENTLY does not proc.
I have found that it nearly always works when attacking MY OWN monsters, but DOES NOT work anywhere close to half the time attacking enemies.
Again I am landing the hit and dealing at least 1 damage on enemies and getting not proc.
Have already verified this with photos but i can do it again if needed.