Scroll down to the 'Presentation' section, the Single column setting is what you are interested in here, unchecking that should put everything into the view you want. If it is not, the only thing of which I can think is a software defect in the version you are running, so if you could provide version, I could have a look in that version to see if I see the same thing or not... Sorry I do not have anything better at the moment.
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