SharePoint Search TrimDuplicates trims too much

Problem

Simple SharePoint search <MANAGER_PROPERTY>:<VALUE> returns only subset of items.

E.g., you have 100 unique customers on a list with same managed term defined in a field, and you try to return all active customers with query “Status:active”, but you only get few hits from search.

I’m using on-prem SharePoint 2013.

Solution

Disable TrimDuplicates in your Search Results Web Part settings or in your Query XML by setting <TrimDuplicates>false</TrimDuplicates> ALTHOUGH the items are not duplicate and only thing in common is this one individual value.

Works? Yes. Makes sense? No, this is SharePoint.