Audits - Before/After Values Not Present

Changes to smart class parameters are not displayed in the Audit tab. I see that an action was performed for a given class parameter for a given host, but no details as to what was changed is displayed.

For example, when I edit a Host, and change a smart class parameter called “server_name” from empty to “test”, then save the change, I see the entry for my action on the Audits tab, see screenshot below, but, I do not see that the server_name value changed from empty to “test”.

Foreman version 2.3.5