Arjan - because aggregation is set by view (and aggregations can be different for different views on the same tab), and all filtering is done at the granular record level, by default the disaggregated record counts show in Sidebar filter devices. There is currently no option to hide the record counts, but there probably should be...we will add this to the list of ideas...thanks.

In version 2.6, using the DataManager workspace you can apply the aggregation to the data at source, rather than inside the Omniscope views/tabs, so that all the filter record counts show the aggregated rather than granular record counts in the Omniscope tab Sidebars.