Google has updated the Google Photos Android app with a new cropping extension. As soon as you go to the editing mode Google Photos will let you know about this new extension which is in the extreme right corner of the editing menu.
If you are wondering what is special about this new cropping feature, then it allows cropping the images in a flexible manner. So, as you can see in the screenshot below you can move from all the sides independent of each other while cropping any image.
If you have used Microsoft Office Lens app then you may have already worked with this kind of cropping. The updated Google Photos app version that we have on our Nokia smartphones is 4.26 that may have brought this feature.