We are on WP 4.9.4 and Civi 4.7.29 multisite.
There is incorrect behavior when trying to do a search on a smart group that is combining a activity type field and a custom field.
We have 750 search results when searching the custom field alone. We have 19 contacts in the activity field.
Therefore, you would expect at least 750 results when searching the smart group that combines the above fields. Instead, we get 124 results.
Here are the smart group settings. Has anyone seen this kind of behavior?