its called zoom bug, restarting nf by closing and running it again would fix it, and don't try to minimize while loading

yeah what phantom said. thats the only way to get it fixed.
But if u want a temporary solution, try tapping f11 a few times till you get out of it.

There are several zoom bugs.
1. The type you describe where the screen turns greenish and freezes kind of. SOLUTION: The big fix is to restart NF and not to alt+tab while the game loads/battle loads. Temporary solution that only works for 1 game, keep trying and hit shift here or there seems to get it out sometimes.
2. The screen simply won't zoom out. Pretty sure this happens when you alt+tab right before the battle. SOLUTION: Turn 3D off and hit shift, and then try again. It should work.
3. You can zoom out, but suddenly everyone's names and IDs fly off to the right. This happens when you alt-tab in the initial loading of the game (With the pictures). SOLUTION: Sadly, I know no in-game solution. The only way to fix it is to restart NF (Although restarting isn't necessary as you can still play like that. It just looks bad)

temporary fix is press f10, for settings. enable anti-aliasing. but the issues is that the names will be going to the right as what snail said.

complete fix is that you need to restart the whole game.