404 error when transferring ownership of repository

Transferring ownership of a private repository from my personal account to another personal or organization account results in a 404 error. As result, the repository is neither in the sender's account nor the receiver's. Nonetheless, the Dashboard has an entry " username transfered repository username/repo_name to receiver/repo_name".
My application version is: 0.11.91.0811

No file or test is named in the issue. Start by reproducing a private repository transfer between personal and organization accounts, then trace the ownership-transfer flow and the dashboard event. Done means the transfer completes without a 404, the repository appears in the receiver's account, and the activity entry remains accurate.

Written by the indexing model from the issue text.