[2019] With the Elite Dungeon weekend coming up, can we fix Slayer tasks in the dungeons for Ironman?

Currently, ironmen won't receive slayer xp nor decrease their slayer counter while fighting their assigned slayer creatures in Elite Dungeons, e.g. dragons in Dragonkin Laboratory. I assume this is intended for group instances of Elite Dungeons, but it should work in solo instances. Any update on this?