Tvheadend

For example, I set filter tag 'HDTV', after that I will just see all the programdata for HD channels. The thing is, the EPG data is shown chronologically and it's a mess, so I want to see all the HDTV channels and select a specific one. Once I click on the dropdown list for 'Filter channel' I still see all channels, it would be much better if I only saw the HDTV channels that I previously filtered. If I select a non-HDTV channels the EPG data won't show anyway.

PS: filtering and sorting for the episode column doesn't work, nothing happens, it never worked afaik