I've got a fix done for this today.
Monday they will count towards dragon tasks AND creatures of Deamonheim tasks.
Oversight on my part, apologies.
This thread was added on July 09, 2019, with posts from JagexRamen.
Original Post
https://i.redd.it/flbefldfe6931.png
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This is fixed and live.
my slayer counter isn't going down killing frost dragons. My current Slayer assignment is: Dragons.
Where are you killing them? I just checked the job and it says it was uploaded to live game. I might have missed one?