Hi, i found out that when using content search if SOLR search results have some items with discriminator = 'item', then the rest-server will ignore them and just return items with discriminator = 'attachment'. So this will lead to a small results than "page size ( default is 60)" in web UI, in these situation, the "Load more" button won't show up, and user have no way to see other search results.

I think we can just set SOLR search param fq with "discriminator:attachment" to fix this bug.