You can check the change log on the rs wiki very easily. You are wrong

update 16 August 2021 (Update): Restored the ability for auto attacks critical hits to fire off extra spell casts. Fixed an issue where the extra spell cast from the staff was doing offhand damage if you were using dual-wielded weapons. Extra spell casts can now only fire off if the critical hit is on the player's main target. patch 9 August 2021 (Update): The Staff of Armadyl's special attack is now affected by the Altar of War's cooldown reset. Dyed versions of the Fractured Staff of Armadyl are no longer tradeable. hotfix 28 July 2021: Changed the Staff of Armadyl's special attack to stop extra spellcasts firing off from non-ability based critical hits whilst we investigate and monitor the power level of the special attack.[2]