Enemy Summoned Troop on my side (Delve Event)

Windows 7, Steam, 4.2

The enemy killed my first troop, Yao Guai, at which point their Watch Mother summoned an Ocularen Leech. However, immediately after summoning it, it switched to my side! When looking at the enemy traits, they all say "[TRAIT_CURSED] [TRAIT_CURSED_DESC] as well.

Hey Ignite, the game team are looking into the issue where the Traits say [CURSED] etc. For more information see this article.

Which Room did this happen in, and what Level are you? Which Troop killed Yao Guai?