I usually ride a road bike, but I was recently in the drop shop buying gravel equipment, and when I switched back to my regular frame, I noticed it was equipped with a Bontrager wheelset that I don’t own.
To reproduce what I did, in the garage:
- Started with Canyon Aeroad 2021 and DT Swiss ARC 1100 DiCut 62 wheels
- Switched to Canyon Inflite with either the Zwift gravel wheels, or the New Reserve 25 GR (doesn’t matter which, but you have to select a wheelset, not just change the frame)
- Switched back to Canyon Aeroad 2021 frame, and the bike has some mystery Bontrager wheels. Nice!
- Started a ride, and I see it still has the Bontrager wheels. There are no Bontrager wheels in my garage.
Enjoy the free wheels! 
Edit: this bug also affects the MTB. Choose Zwift MTB frame, go into the drop shop and pick the Zwift MTB wheels, click Equip, go back to garage and choose road frame, get Bontrager wheels.
Edit again: if you quit the game and restart, the bike appears to revert to Zwift carbon wheels, so you’ll have to repeat the process to get the Bontrager wheels.
