I have been unable to find a method for switching the aspect ratio in a crop. 4:3 to 3:4, for example. There are situations when one would want to perform a portrait-crop on a landscape-oriented image. The only way I have been able to do this is select the “unconstrained” setting.
A button to flip the aspect ratio would be helpful.
One solution is to select “Enter Custom” in the aspect ratio dropdown, and then entered your desired ratio. The crop will change and the new aspect ratio will be added so you can select it in the future. Version 1.6.10