Workout cadence different in game an companion

When I do a workout in the Zwift app, it says for example “300W at 90rpm” but on the companion app it says “300W at 105rpm”. It’s not just for a single interval, it was every time I looked at the companion app. 90rpm is difficult enough for me.
I was getting this problem yesterday, and a few people have mentioned it in the in ride chat on group workouts so it sounds like it’s not just me.

I can’t include links in my post, but it sounds similar to the problems reported in the past in messages 241583 and 476587

I’m having the same problem. This has been happening for a couple of months now. The Zwift app cadence seems to be the “correct” one, while the companion app keeps telling me to pedal faster, consistently with 15rpm difference.