Same issue here at CYYZ - so Canada impacted as well.
What I'd like to finally understand is the following - developers suggested in some thread here to disable weather smoothing in EF automatic mode when using AS. But as noted - this removes all fog/reduced visibility rendering. Is the official advice when using EF+SF+AS - still to disable weather smoothing in EF and changing the Fog Mode to Off in the Mini-UI? What are we losing if we keep weather smoothing enabled in EF and still using AS for weather? I am a little confused in this respect.
First picture attached is in CYYZ with either weather smoothing enabled in EF or enabled but Fog Mode to Off - correct rendering
Second picture is with weather smoothing disabled and Fog Mode at default (manual) - obviously incorrect depiction.