A few options to try First - save this version on a DIFFERENT save file. Create a new one and call it YOURGAMETEST for example. Then reboot. Then, instead of restoring your previous project, just the version that you think wasn't broken. If that doesn't work, load the broken version. Are your characters and objects still there in the tabs? Or Email support and see if they can offer guidance.
Hmm weird... Any way you can just duplicate the start scene (menu in your case) then just delete the menu component from start screen, now bring your menu screen at the end of your levels and then align or stack your scenes and mute the menu scene and allocate it to the main menu background. let me know if it solve your problem.
Can you drag the scenes in a way that gets that menu scene out of the start position? Can you drag the start scene left?
Thank you very much!! You just saved my life! I made a copy of menu scene and copied all the components of the real start scene to the old menu scene. Deletedthe start scene and muted the new copied Menu scene. Now Game works fine. But problem is it shows the start scene muted. But works fine. Atleast we now know how to cope up with this bug... Thanks @jigglybean and @Taimoor Javaid for your answer...