Since the latest patch Mastercloner Zereks deathrattle will no longer work if he gets copied by Undatakah (obviously with a spell casted on Undatakah). Earlier this interaction did work as intended (at least as far as I can judge)
Mastercloner when it dies resummens the card not a copy. This means in undats case the first time with the battlecry he gains the deathrattle and if you cast a spell he revives but when he revives he no longer has any deathrattles at all and can freely be killed. As far as I know it still correctly works this way.
If your going to make a post for a bug should provide info on exactly what you are doing. You post dosent tell anyone what you are doing or even what is happening.
It didn’t correctly work that way in the first place. Previously, reports were saying that putting Zerek’s Deathrattle on another minion (with a spell cast on it) would summon another Zerek, even though the deathrattle’s text didn’t name him specifically. This isn’t the first report that Zerek’s Deathrattle now no longer works at all outside the minion it originated on - Undatakah + Zerek bug.
What other Deathrattles did Undatakah have? Test Subject? Or any of the ones that return a dead minion to your hand or deck?