game window clipping

My Game Window has suddenly started cutting off the edges. I put my laptop to sleep and closed the lid. When I opened it up again and woke it up my Game Window is cut off. I have no idea what I did to do this but I can’t seem to make it stop. I tried restarting everything - including the computer and nothing’s changed. Any thoughts? It’s really difficult to work on a GUI this way!

could you give any capture?

The white box around the GUI in the Scene window is what I was seeing in the game window until last night.

could you explain more detail?
I still haven’t known what was wrong