I can't change the images

[1Sk0rlupka]

Hello, I am using the latest version of the application and I noticed a strange bug. When I downloaded some images, I wanted to edit them in Photoshop, but I got an error, "Not a .png file", although the properties indicate the correct extension. This problem is also with all other images downloaded through this program.

This is really very strange, because the only solution I found was to open and save the images through Paint. This is a big problem, because I lose the transparency layer.

Thanks in advance for your answer.