Media Player 12 Full Screen Problem

this is a recurring problem that i always seem to have when i get a new version of windows or windows media player.

I can't seem to get any videos i open to automatically fill up my screen as i have before i normally find out how to do this myself but this time i can't.

In the past i would set video size to 200%, fit video to player and then set the player size to my desired size and then videos would always start covering most of my screen. However when i try this now very new video i open resets the size of the player to 200% of the video instead of retaining the size i gave it earlier.

In short i want to have all my videos open so that they cover my screen but so i still have access to my taskbar (so not pressing Alt-Enter).