Etcher fails to run on Raspberry Pi Desktop x86

I have just installed the 32-bit Linux AppImage for balenaEtcher on Raspberry Pi Desktop (x86). When I attempt to run the AppImage file, I get an error message reporting:

[2264:1207/] The SUID sandbox helper binary was found, but it is not configured correctly. Rather than run without sandboxing I’m aborting now. You need to make sure that /tmp/.mount_balendamGCky5/chrome-sandbox is owned by root and has mode 4755.

Any suggestions on how to get this to run properly on RPD?

Hi there,
balenaEtcher is built on top of Electron framework.

The problem you describe seems to be the one described in a github issue in Electron repo.
I think the most relevant explanation is given in the closing comment there.

So I would suggest checking if a workaround with sysctl kernel.unprivileged_userns_clone=1 works for you, if it’s acceptable in your use case.