It feels like piling on, but I’m in the same boat. I run Zwift on an iPad and I noticed during my Zwift workout routines yesterday and today that Zwift seemed to have trouble changing power levels. I tried multiple spindowns in Zwift but all attempts failed. Having a KICKR, I tried a spindown using Wahoo’s app and the calibration was successful. I then tried more spindowns in Zwift but all failed. I wondered if this could be tied to the update with Fuego Flats and this thread confirms my suspicion.
For what it matters, I just submitted a message to the support center.