Select a picture iOS

When I display an image selector in an iOS app, it allows me to select an image.
The selector shows ‘move /scale’ but I cannot do that.
Sometimes, parts of the image are outside of the square area it displays.
In this snapshot, all the circles are complete, but the top row is chopped, as is the bottom row, when the image is received by my app.

How can I enable proper scaling, cropping, etc?
What’s going on?