worked fine on my android phone, using Connect.
worked fine on firefox & linux, the file shows as .webp to me.
Decided to investigate this a bit: when opened to new window, the image url has ?format=webp
query argument, if I change that to ?format=jxl
then it breaks as the server actually provides a .jxl file. At least I had to TRY to break it :P
% file c6ca4c8c-20a2-4105-8e6c-833d8c7d3e52.*
c6ca4c8c-20a2-4105-8e6c-833d8c7d3e52.jxl: JPEG XL codestream
c6ca4c8c-20a2-4105-8e6c-833d8c7d3e52.webp: RIFF (little-endian) data, Web/P image, VP8 encoding, 623x700, Scaling: [none]x[none], YUV color, decoders should clamp
https://www.gamingonlinux.com/2024/05/microsofts-new-recall-ai-will-take-screenshots-of-everything-you-do-freaky/
https://www.microsoft.com/en-gb/windows/copilot-plus-pcs#faq2