There are two ways to undo the split screen view (in either orientation). You can simply close the tab by clicking the “X” or you can drag the tab back to its original location.
- CLICK TO CLOSE: If you don’t need to keep that tab open (or you don’t like to drag tabs!) you can just click the “X” and close the tab.
- DRAG BACK TO ORIGINAL PLACE: You can just put your cursor on the tab and hold it down to drag it back to the other tabs – in any order you like (you can always drag tabs to a different order in the normal view).

Then keep dragging…

Then let go as soon as that tab is back in the original location!
