Linux AppImage Fails with Sandbox Error

(#360) Bug Won't fix desktop packaging

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Comment by @purpl3f0xsecur1ty
RexSystem 1 vote originally by @purpl3f0xsecur1ty on GitHub
I get this a lot with other AppImages, it's less an issue with the Fluxer AppImage and more to do with the configuration of the sandbox on Ubuntu. Other Linux distros don't seem to have this issue.