As the image shows, when the AI opponent is controlling Enigma Thief's enters trigger, they're able to choose multiple targets from the same opponent (usually the player), which shouldn't work with the card's mechanic.
When I control the trigger, it behaves correctly, i.e. I'm restricted to one target per opponent.
I'm using Forge Ver. 2.0.00-SNAPSHOT-11.02, but it has happened regardless of the version of the game I use, since the beginning of the year at least.
Does anyone know what the issue is, and if it can be fixed?