I rode for 54min 39sec on a group ride in Makuri Islands. Zwift recorded the distance, elevation and calories correctly. However the gps data recorded was only 1min 28sec in Harrogate (different location). I first noticed it in Strava but I see the activity map for the event is wrong on Zwift as well. I downloaded the fit file and uploaded it manually to Strava and it is still incorrect.
My husband has experienced a similar problem on his ride today.