This is beyond scary. I have no idea how my screenshots I took and cropped with Snipping Tool and send to someone: at work, at home, across multiple machines and accounts.
Isn't that the default on Android phones if you screenshot then crop. As opposed to screenshot, then open it and crop.
I tend to use the rectangular option in the snipping tool as a way to be certain that I won't forget to crop important info. Both of these make me think I need to check my process and see if it is relevant.
It seems like the problem is that if you use the snipping tool to save to a file that already exists it only modifies as much of the file as is required so that the new image you saved is visible - the rest of the file's data is preserved. The problem is saving to a file with more information than the cropped information requires - the original images information "overflow" isn't removed. So if you're saving to a new file it's fine, there's no extra information.
My stubbornness to relearn and move away from “printscreen+winkey+r+mspaint+enter+select+Ctenophora+c” pays off. I don’t know what it is about snipping tools (and I use sharex too” but I always find myself going back to paint, as the tools feel like they get in the way.
I've always used "prtscn+paint" as well. I've tried various on other ways and I'll usually be like "that's kinda cool, maybe I'll try that." Next time I need a screenshot it'll already be pasted in paint far before it occurs to me "i think i forgot something, guess it wasn't important."