I'm in two minds whether to consider this a bug or a suggestion. I'm considering it a bug since this feature makes impossible the following task:
When editing an image at pixel level (when creating pixel art, minute adjustments etc) at high magnification (800%), using the selection tool select a small region of pixels (5 x 5).
Press the M key or select the Move Pixels tool. Attempt to move the selected area to a new position. This is impossible because you will only be able to resize the selection by dragging the selection borders.
Paint.Net seems to 'snap' mouse control to the selection borders if it is 8 or 9 pixels from the selection border. I suggest reducing the snap area to 1 pixel from the border, or to remain on 8 pixels but then do not count the pixels that have been scaled to 800%.
