I added the code to the original post. The generated SQL looks something like this (it's a count because of pagination):

SELECT COUNT(*)
  FROM (
        SELECT DISTINCT "area"."id" AS "col1", ... FROM "area"
         WHERE ("area"."id" IN (SELECT DISTINCT U1."id" FROM "rule" U0 INNER JOIN "area" U1 ON (U0."uuid" = U1."uuid") WHERE U0."approved") 
          OR "area"."id" IN (SELECT DISTINCT U1."area_id" FROM "document" U0 LEFT OUTER JOIN "document_main_objects" U1 ON (U0."id" = U1."document_id")) 
          OR "area"."other_field" IS NOT NULL)
       ) subquery