...What? I have no idea what you're talking about.
but apparently oasis does
Oh my god what the forget did you do?
I dragged from the top and my screen split up into halves.
Once again, what?
hi, you're stupid
remember how, before 8.1, there was no start button on the task bar? hovering over the bottom left corner gave you this ugly piece of stuff:

in 8.1 they added the start button to the taskbar again. but did they remove the completely redundant thing you get when you hover over the bottom left corner of your screen? nah, they thought making it smaller and less ugly was enough. and they thought it would be a good idea to let it cover the taskbar when it appears.
loving GENIUS