Been using Piklist and the helper plugin for a while but recently with WP 3.5.1 and Piklist removed the edit screen styling for both posts and pages? Disabling the plugin brings back styling.
Tried to reinstall the plugin several times. Tried a clean db. Stock 2012 theme. The same behavior. I cloned the bleeding edge WP 3.6 and there were no issues with Piklist and edit screen styling.
If anyone experiences this frustrating behavior I was able to finally resolve it by flushing the browser cache.