Since some point during the 5.7 Sneaky Peeks OmniWeb startet to render The pages of the HUBB differently. The rows are way too wide and thus horizontal scrolling is necessary.
Example:
Horizons Unlimited
Safari renders ist the same way in what I would call a first pass, but then corrects the representation so that everything fits into the window.
I hoped this problem would disappear during the development process, but no change until now. At the moment I'm using 5.7 beta 2 (v618.0.98981).
Regards, Hans