Platformer Game Issue

hi guys,
i am having an issue with platformer game.i have setup the map like this
start => main menu ui => level select ui => level(say level(1) =>world ui =>game over ui=> main menu ui
i use menu jump logic to end the game level so that when an object collides with a decoration piece
the user is taken to the level select.
i also have event observer set to game over and pause current world.

i found a problem when i removed the main menu background.
the problem is when i played level 1 and exit the game using menu jump(or by loosing intentionally)
i saw that when i entered the main menu ui(which is without background) my background was
still scrolling.i think it would cause problem with performance.
can anyone please tell me where i went wrong and how can i fix it??
please note:the same problem happens in all the 5 levels.

 

Did you check the pause world on the menu jump settings.

 

yes,i did.

 

Set the background speed to zero.

 

yaah,but it should'nt be even appearing in main menu ui.

 

Have you added a background for your menu UI?
You need to add one in UI to hide game field.