Hi,
It's what i'm used to. I read a post somewhere Mathias saying it was not designed for single panel use. I wanted to add to that post that it only presents a problem because often the File Search, Pack and Unpack dialogs don't show up when using single pane.
I wanted to add it to that other post but for some reason there was no reply button, i can however post here so there seems to be no spam filter active.