Only list groups of selected tasks when grouping and filtering

IMHO, when the group by tag and filter by tag are used together, only the tags selected in the filter should be listed in the groups. Currently, all tags that appear together with the filtered tags are also shown. For instance: consider I have the following tasks: T1 #writting #post T2 #development #test T3 #writting #report T4 #development #coding If I want to see the next "writting" and "development" tasks, I could group by tag and filter tasks that contain "writting" or "development". However, when I do so, all other tasks groups ("post", "test", "report", "coding") are also presented which makes the view quite cluttered.