Oha interesting, I was not aware of the fact that I have always been using the "Advanced web interface" on Mastodon. I think from the start when I started using it this was the default, which kind of looks like Tweetdeck. But there seems to be a new default which only shows you one column visible at the same time.
@zladuric @nolan I saw it mentioned in this video: https://kino.schuerz.at/videos/watch/a349f639-95d9-4869-8ff4-a591c37dd35e
Settings -> Appearance -> [/] Enable advanced web interface
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!