It looks like the maintenance caused the “your best” information on the ride paused screen to be cleared. It did it on the first ride so, just to check, I started a second ride and it showed all 0s.
Screen pictures attached.
Yeah just seen this on a ride I did this morning, my best was the same data as the ride, also my ride although it showed the distance done on my profile, didn’t show in my activity feed(it was a group ride)
there is already a thread on this subject.
see this:
https://forums.zwift.com/t/fitness-metrics-on-zwift-com-my-feed-missing-after-update/604277/8