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Re:Firefox 111.0 enabled Origin private file system access by vetinari on Wednesday March 15, 2023 @11:22AM (#35169715)
> but I’ve not seen it elsewhere in desktop OSes aside from macOS.

Flatpack-ed applications on Linux do have similar sandbox.

Re:Firefox 111.0 enabled Origin private file system access by c-hendricks on Wednesday March 15, 2023 @03:58PM (#35173879)
Windows does as well. But like Flatpak, I think they're handled at install time, not at-access time.