Is panel wizard broken in b5 ?

Hi, I've downloaded xWiki 1.0beta 5 and tried to use the panel wizard to have both columns. After clicking on "save the new layout" a popup tells me that it's ok ("the layout has been saved properly"). But after, when I go to any other page, the right columns disapears (like if the layout wasn't taken into account). I know that this worked on b4. Was there any changes or is that a bug ? Thanks, Antonio