The Nord is the first generation of a new mid-range smartphone series from the Android OEM OnePlus. It has been out for nearly 2 years now, and has only just been officially updated to Android 12. Despite the stable nature of this new OTA install, it still carries the risk of some known bugs.
https://www.notebookcheck.net/OnePlus-Nord-sees-a-stable-upgrade-to-OxygenOS-12-based-on-Android-12.619758.0.html