I always experienced this with Screenshot Captor. I use the application for several years.
When I receive a full screen screenshot in an e-mail (embedded image, not a file), and I copy the image to Screenshot Captor (File - create new image file from clipboard image), then only a part of the file (screenshot) is pasted into the new image.
When I paste the original image (from the e-mail) to (for instance) Irfanview, and then perform a copy, Screenshot Captor created the file correctly. Do you have an idea how I can resolved this problem?
With kind regards,