Filters are not working in My Oracle Support portal's Service Requests tab

In the Service Requests tab, when I select a customer and a customer contact as the filter, filter gets applied as per confirmation message, but the data still shows all the SRs, not just the selected customer/ primary contact keyed into the filters. This behaviour is very inconsistent. At times, suddenly the applied filter starts working and all of a sudden, all the SRs disregarding the filter are displayed.