Flexible Panel style disregarding layout

Hello,

I've got a fresh install of Drupal 5.20 running Views 3.8, trying to setup a node template override with 2 rows, one of which has 2 regions. The regions appear to be set as I want them in the panel editor, but when I view the actual overridden node all panels take 100% width and display in a row above and below each other, rather than side by side as they appear in the panel editor. I tested this with a panel page as well and got the same result. Any help would be greatly appreciated.