I'm using TweetDeck version 1.5.3 on OS X (or web.tweetdeck.com version 1.6.1), and I can't seem to find an option to enter Single Column View. In previous versions, there was an icon in the upper right hand corner that allowed me to toggle between a single column view (for a tighter UI experience) and then back to multiple column view for a more comprehensive view.
Product help states you need a tweetdeck account to get some UI features, and I am using a tweetdeck account. I checked troubleshooting tips, release notes, and searched superuser/google for help but have not been able to find a resolution.
