Camera photo preview up/down swipe
In the Gallery app, when you are browsing single photos and swipe either up or down, you are brought back to photo grid view. In the Camera app, when you are browsing the taken photos and swipe up or down, nothing happens. As the single photo view is very similar in these apps, you would expect the same behavior, i.e. that in the camera app you would be brought back to shooting mode (which happens only if you press the near unreachable X-button at the upper right corner).
I think this is inconsistency in the UI and should be fixed.