As probably many i have received this update and using this option for a few weeks now. It's hit and miss. I like being able to see all unread messages in chats and channels at the top. So, i use Unread filter. But then i need to message in already read chat or channel and i have to unhide everything and then hide again? No, i don't want to type name or channel name every time i want to go somewhere. So, this new experience, which should have reduced plane switching (between Chat and Teams menus) is introducing another type of switching for me - between Hidden and Not hidden. If i don't use Unread filter, then it takes too much space to show all relevant chats and then all channels. I want to have everything at a glance, no scrolling down. For that i would have to use monitor in portrait mode :D And solution is easy and elegant. Just do like Slack! :D Show everything and move unread to the top with bolded text. It is that simple!