Hi,
The "older" UI is shown when detection that your graphics card has the necessary OpenGL support fails.
Can it not, please? Seriously, what a terrible idea.
Colin dropped support for the older UI upstream yesterday:
https://bugzilla.gnome.org/show_bug.cgi?id=695414
And I moved the acceleration check outside of the timeout code a few days before that:
https://bugzilla.gnome.org/show_bug.cgi?id=672943
--Ray