It's not a bug, we didn't unlock death plateau.
Go get some rune boots!
This thread was added on November 15, 2019, with posts from JagexHusky.
Original Post
https://i.redd.it/zndqlmlbxsy31.png
What about dragon weapons from elite clues?
Any planks to unlock them or do we consider them as alchables?
Nope, gotten make do with that rune scim for a while :p