Split Screen on el capitan
So I have been trying to use my split screen feature on el capitan with native apps like pages and preview together and it doesn't work. Even if i am able to drop one in the blue split, i cannot choose another app for the other half. And this happens for a lot of apps and only some combinations work such as Safari and Preview.
Is anyone else having this problem? I find this a major glitch in the new feature because its practically unusable.
MacBook Air (13-inch Mid 2013), OS X El Capitan (10.11)