Audit Report returns no results when filtering by group in Acting User. (4379191)

Running an audit report with a specific user in the 'Acting User' filter returns results as expected.

However, using a group in the same filter returns no results, even if the acting user is a member of that group.

It could also return random results that don't match the user account specified under the "Acting user" filter. 

This behavior is a known issue on Active Administrator.

A Defect request has been submitted to resolve this issue in a future release of Active Administrator. 

Defect ID: 551232