Telegram is available sandboxed from the Mac App Store on macOS.

It could easily sandbox itself in the non-store distribution as well, yet the developers apparently choose not to.

It is also sandboxed in Flatpak.

Looking at the flatpak manifest it has `share=ipc` but no directories shared.. I'm not sure on flatpaks defaults for what it would actually have access to on the host.

That is not the same app.

Telegram Desktop is also on the app store though.

I know, it's (slightly) better

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