Dear @arkiboys
Answer: visuals are basically independent from each other. Filters on one visual basically do not influence the other visuals, as they have their own filter pane.
If the “Total Activities”-measure is presented on a different visual (like a card) then your table-visual, then it explains your unexpected number of rows-outcome.
However Power BI knows lots of interactions between visuals, like setting slicers.
Hope this answers your question.
KR Delta Select