Unit lost shoutouts during intentional deaths.
Mendechaus will give unit lost shoutouts ("Skarg lost" // "Your units are being wiped out.") when the creatures are experiencing intentional deaths. Noticed this while playing Lamash and regularly sacrificing units by dropping them onto crypt pyres or executing them in the torture chamber.
The player already knows these creatures are dying, so it's unnecessary information. Plus it can be confusing when you're fighting someone at the time and hear "Your units are being wiped out" because you ushered a bunch of gnarlings into the decontamination chamber.
Similar interactions i'm unsure about;
Tavern grinder
Blood Money
Sacrifice // Summon Vampire
This issue will be fixed in next minor patch.
Thanks for reporting!