I don’t know what a .webp file is but I don’t like it. They’re like a filthy prank version of the image/gif you’re looking for. They make you jump through all these hoops to find the original versions of the files that you can actually do anything with.
Edit: honestly I assumed it had something to do with Google protecting themselves from image piracy shit
Works great in Ubuntu.
My guess is Microsoft doesn’t like it because Google came up with it. Ms has had some issues with recognizing open formats before. Could be you are using old versions of apps too.
Oddly enough I had a hard time getting webp files to work as desktop backgrounds on Ubuntu even if it opened it fine in the viewer. Had to use a converter