Saved Themeroller theme shows wrong values

Saved Themeroller theme shows wrong values

I started using Themeroller to slightly tweak the base theme. From the Help I learned that I should bookmark the URL to save the theme.
The problem is that after loading a bookmark, the widget demo on the right shows the correct theme, but the values on the left have their base values (or at least other values). Once you make a change and the view refreshes, it applies all the wrong values.

This seems to be a problem only with recent saved URLs. So when you are in the middle of testing and modifying a theme this problem is very annoying. Today I opened a URL bookmarked yesterday and it was correct.
This problem applies to IE, FF and Chrome.