Automated triage: Not a bug
Thank you for reporting this issue. This report is from an early 2.3 release, and nothing since has confirmed it. Passkey registration has changed a lot since then. If adding a passkey by scanning the QR code with your phone still fails on the current version, please open a new report with steps to reproduce and any server error log entries.
This is an automated assessment. A member of staff may review and update it.