Lost new objects in my garage since new levels

I have a problem with the garage. I lose my new items once they are used.
For example, I win a jersey. I wear this jersey. If I change jersey, the previous jersey disappears from my garage. For example, I’ve lost the level 70 and alpe de zwift jerseys. I’ve had this problem since the new levels.

Have you, by chance, logged in to Zwift on more than one device? This sounds like common behavior when logging in with multiple devices.

No I use only one device (a PC with Windows).