When I play the story, after each battle has ended the game takes me back to the main screen. In other parts of the game when playing a battle it takes you back to a different screen not the main screen. I then have to click to the story tab at the end of every battle to start a new part of the main mission/campaign, a bug if not.
Interesting to see it addressed here:
I do believe I’m owed a bug bounty for this! 