I remember when our company split up and we had to give them the source code of some older versions that they still used. We couldn’t do that because the repo was corrupt meaning that we couldn’t access some older revisions. We had no problems using it day to day so nobody noticed which meant that all backups were also corrupted.
That or when SourceSafe was literally deleting random files because it was full of bugs.
I remember when our company split up and we had to give them the source code of some older versions that they still used. We couldn’t do that because the repo was corrupt meaning that we couldn’t access some older revisions. We had no problems using it day to day so nobody noticed which meant that all backups were also corrupted.