As the title says, I caused this somehow by accident and can"t seem to be able to reverse it. In the picture it shows (sorry about quality had to take it with my cell phone) that the game is being displayed as a normal window on my monitor and not taking up the whole screen. I'm not used to seeing the task bar and close window option around the game while playing and it is throwing me off. If anybody knows how to reverse this...or how it is done in the first place, any help would be appreciated. Edit: I forgot to mention this happened while I was typing in chat somehow.
It looks more like you have your Client settings on Window Mode, where it will show the start bar. I'm not on PC, so I'm not sure if you have a Client settings that can be changed from Windowed to Full Screen. If not, try double click the blue bar up top to see if it will full screen it.
Tried full screen option...definitely not the problem I will look into it and see if I can adjust it.
As they've said, you're in Windowed mode. Both Alt+Enter and F11 toggle between windowed/fullscreen. Handy shortcuts, really. I can't alt+tab unless I'm in windowed mode.