It’s frustrating that there’s no "Back" button. A simple option to return would make navigation much smoother. I hope they update this!
Not sure why you bumped a nearly four-year-old post just for that, but did you read the other posts explaining why it was designed this way. If London Heathrow has 22 pages worth of gates for a total of 176 gates, adding a back button would now put it at 25 pages. Additionally, if you then are trying to get to page 25, and you accidentally hit the back button when you're on page 24, you now get to go through all 25 pages of gate selections all over again. Is this what you really want.