Just purchased the product and overall it is excellent. That said, it is missing a genuinely needed option within cropping. This being the ability to lock/align the cropping tool to the center of the image so that when you click and drag from the left; the right also crops to the same amount, and like wise from top to bottom. Most importantly to me is the need to crop from a corner and for all other points to move the same amount (whilst being locked at the center) framing the image equally and effectively.
I believe although do not fully remember that to do something similar in the overly priced competitor of affinity photo is by holding down alt (or maybe it was shift, but not both together) whilst cropping.
For now i am manually center cropping by adding/taking away the x and y value to achive an equal border.