Title screen glitch

I log in to play the latest snapshot for the first time on my computer and I was also on skype so I split my screen. When I got to the minecraft title screen, the display was in the lower left hand corner but when I move my cursor around, the buttons would be in the normal spot. I got on some of my singleplayer worlds, and the screen was just like normal, but when i got off, the title screen was still in the lower left hand corner. I'm not sure if it was a computer problem but since it was a snapshot, I decided to let you guys know just in case. If this helps or you think that it's my computer, please tell me.