I log in to my alt today after a nap or whatever to do some dungeoneering. I get going and switch weapons to find empty slots on my mage bar filled with melee abilities... this is the first clue that something is wrong. so I proceed to clear the floor figuring all is good in the world and maybe I switched my bar some how. Floor cleared! I stop to try and figure out just exactly the issue is but the abilities won't move. I give the game the benefit of the doubt thinking maybe its an oversensitive mouse. I click to clear the ability bar and all my mage abilities were replaced with melee abilities. It sinks in. Report bug comes to mind. I look at the bar and click technical issue because am smart. nope. Whisked away to the help site only to return to find the report button COMPLETELY GONE FROM THE INTERFACE. I log out of RS and take to the app that must not be named and to the HLF for hefty-complaining. Stay tuned for episode two of this epic tale that I am more than likely never to reply to. Thanks for reading.
First of all, you're not alone. The most recent update broke quite a few things in the game, not the least of which is the Action Bar and most notably, some of the puzzles for Clue Scrolls.
They are aware of the problems. There are several threads on Reddit too.