I am developing a simple ball game, where the sole objective is "Survive as long as you can from the enemy balls". So I gave my ball controls and set the enemy ball's AI to "path following". It seemed to work flawlessly, but now I am facing a problem where the enemy balls get stuck behind a wall and. You can understand the problem better by seeing this image,
I tried to changing the game environment, set the enemy AI to "seek". But none of them worked.
So, How do I rectify this problem? Also, is there a way not to make the enemy balls come together as in the image?