Bug with WV reward : Complete a Convergence or Fractal (20% after a fractal)

Hello, there seems to be a bug with a new Weekly Wizard's vault quest.

The task asks to complete a Convergence or Fractal, but after completing 1 fractal, it's at 20% and not complete.

I don't know if it's meant to be "a convergence and 5 fractals" in which case the text is wrong, or if it's meant to complete after a fractal, in which case there's a bug.