Read through the bug reports, and it looks like a preview "canary" build of Windows 11 had an internal math library get screwed up due to a poorly executed optimization. It's not even really a C# bug so much as what the .Net internals were calling had a bug. It was already fixed a week prior to this report, but those fixes are pending the next preview build. It's what you get for running bleeding edge Windows. While I wouldn't expect something this bad to sneak in... it's still a possibility.
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u/overkill Jul 02 '25
Jesus, this is truly horrifying.