When I work from the Today view on the Windows client, I usually collapse the contexts that I'm not interested in. I've noticed that the contexts expand if I do any of the following:

* drag a task to another focus (i.e., drag it from today to tomorrow or scheduled)
* quick add a new task, even if it's to a different day
* add a new task with the Add New button.
* when I do nothing at all. Maybe on app refresh?

This has actually been a bug for a very long time. I've shied away from the desktop version for this reason, but I need this to work as well as the web version.