WPMU Dev dashboard on one of my sites is super tiny

I have multiple sites on a WPMU install. I am up-to-date on all of my plugins, and the upgrade network is up-to-date as well.

One of the sites has dashboard content that is at 1/2 size of the other dashboards. What up with that? Note that it isn't the zoom – checked that.

Has anyone experienced this "effect" or "feature" or is it just me? (and how do I go back to the basic version?) :slight_smile: