It does not really matter much what I do personally. I cannot explain that to 500 visitors everyday. They just go away from our website if they experience this.
Anyway we don't like the new looks of PMF much:
* colors are ugly
* the proportions of the panes leave leaves little room for the main text
* fonts are too big
* as a result much too many wordwraps in menu's.
2.6 was looking so good why then this 'regression' in 2.7?
We will figure out to do minor changes in index.tpl of version 2.6 so that it will work with 2.7 (AJAX or not). I have already done, but will need to figure out how to get he header back (that funnily works in IE9 but not Chrome and Opera ..).