Not sure if you’d consider this a bug or a feature request… ~=On mobile, to go to the next photo by swiping the screen, I need to swipe from the very edge of the screen. This is tricky on my Samsung Galaxy S10 as the screen is curved along the edges and I have a case on the phone.
PhotoStructure should go to the next photo when I swipe left on any part of the photo (not just from the very edge), and similarly it should go to the previous photo when I swipe right on any part of the photo.