Yii2 cache not caching queries with aggregate functions?

Question

Yii

Queries like this are not cached

$minValue = (new Query())->cache(3600)->from(...)->min(...); 

$minValue = Yii::$app->db->cache(
    function ($db)  {
        return (new Query())->from(...)->min(...); 
    },
    3600
);

The documentation is ambiguous about the restriction
https://www.yiiframework.com/doc/guide/2.0/en/cach...
Query caching does not work with query results that contain resource handlers. For example, when using the BLOB column type in some DBMS, the query result will return a resource handler for the column data.
The size restrictions do not explicitly apply in this case.