After navigating to page User Task List (1170, List) we could see that applying filters does not work either by applying them manually or by code.

Usually, the specific page was designed to be accessed from the Role Center Tile for User Tasks and we were informed that due to this there were different filters applied on the table preventing users to use the filter section.

However, since the page could also be accessed by a simple search in Business Central, we do believe that the opportunity to use the filters and correctly apply them should be an out of the box feature.