When Word Wrap is turned on the horizontal scroll bar is hidden. I like this, but it also removes the handle that can be used to split the editor horizontally (side-by-side). Is there a keyboard shortcut or menu path to split horizontally?
22.214.171.124 is the version I'm running. And I think your screenshot is showing a vertical split. I can see them for the vertical just fine. But when I want a horizontal split, since the horizontal scroll bar is gone in word wrap mode, the handle is missing, too.