You know who used to do that? Microsoft Teams. I would take photos with my phone and upload them via Teams, Teams would display them just fine but saving them teams would name them .png (even though they were jpeg) and I couldn’t open them with the gnome image viewer (this is also how I found out that the image viewer prioritizes extension over magic byte (which seems stupid to me).

Eh … Mint is Ubuntu based, Ubuntu is Debian based so they’re all Debian … Also Arch? ^I ^use ^Arch ^btw

For me (southern Germany) Pfannkuchen (literal translation is Pancake) is what OP showed. Thin rollable dough-circle. American Pancakes are just called Pancakes (in english)

Also Berliner are called Berliner not “Krapfen” and definitely not Pfannkuchen (as some weirdos would imply)