Hi there, I looked into this issue and one of the scenarios where both the Deathmarked 501st ally and Fives would die is if the Deathmarked 501st ally also had debuffs which prevent Health gain (like Shock or Healing Immunity). So let's say Rex has Deathmark and Shock and Fives is still present. If Rex is attacked by Darth Revan, Fives sacrifices himself and Rex gains Max Protection but no Health because of the Shock. Then during the same turn, Darth Revan attacks again using Lacerate due to his unique ability "Villain" because the target enemy had Deathmark and gets through Rex's Protection. If this attack is powerful enough it can defeat Rex during the same turn even if Fives sacrificed himself and this is a scenario where everything works as intended from my understanding.
I guess it would be very helpful if you would have a video of the situation you encountered so we can analyze everything that happened. In case you get a video please feel free to send me a private mes...
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