Is time anomaly broken?

Yes, it is, and it’s not the only thing that’s broken/bugged.

  • Time Anomaly.
  • Clearcasting / Arcane Empowerment (CC bonuses only for 1st in stack).
  • Blink.
  • Charged Up (sometimes only 3 charges, because of out of combat decay overlap). and Time Anomaly when it worked.
  • Clearcasting and Slipstream (sometimes need to stop on proc and then run again for it to work)
  • Brain Storm trait doesn’t proc Rule of Threes

Plus other messed up stuff and bad changes, no improvements.
But hey! At least Arcane Orb works a lot better.

Since it’s a holiday time and half of bugs are not fixed since pre-patch (years for blink) - I guess Arcane is left in this state for more months, and there is no point hoping that it’s going to be fixed soon.

Edit:

Thank you Blizzard! Time anomaly fixed in Patch 8.1 Hotfixes for December 19th
Clearcasting / Arcane Empowermen bug also fixed, but not included in patch notes.