I synced a bike ride this morning. When I drilled down to review my results, the map was there and the summarized totals that normally appear to the right were there but the detailed stats like HR, cadence, moving time, etc. were not. Basically, there was only while space below the map. I checked activities from days before and still only white space.
Then I tried to review my report of activities and Connect couldn't display it and threw an error. So then I tried looking at the weekly goals I had setup and none of those widgets worked properly.
The Connect status page right now has everything green but I currently have those problems. So it's not up-to-date or it's just me.
It seems like they had this same issue a month or so ago and took a day or so to get it fixed. The modern dashboard in Garmin Connect won't load on the desktop version.
The Android app seems to be ok.