Issue Filtering by User Role Maybe Others

When filtering by Admin, the results still include users who are Members/non-admins. The role filter doesn’t appear to be filtering the log entries correctly.

The issue names no file, test, or entry point, so first reproduce the role-filtering problem with Admin and Member users in a WordPress activity log. Trace the filtering path and add or update coverage where appropriate; done means Admin results exclude non-admin users while retaining the correct log entries.

Written by the indexing model from the issue text.