For the Not in Database report, the list is empty, even after adding files manually to files directories. I tried this for the auditfiles config settings having private, public or temporary file paths. I manually added simple text files to both the public and private directories, but none of theme showed up in the report.
I am running Drupal 8.9.13 on Ubuntu 18 with PHP 7.4 and tried this with both 2.11.0 and 3.0-beta1 of the auditfiles module.
This is the same type of bug documented in https://www.drupal.org/project/auditfiles/issues/3090003 → . I compared the patches in the installed auditfile module to that given in the mentioned issue, and that patch has been applied. Perhaps there is something more in the filtering procedure, however, that might be causing this.
Fixed
3.0
Not in database report
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
I can confirm both issues.
(1) If set to 0, no files are shown.
(2) If set to 250, only the one file directly in "public://" is shown, the other 682 files in subdirectories are not listed.
(3) If set to 1000 (which is larger than 683), all 683 files are listed.
(4) Patch #9 resolves both (1) and (2).