AppImage won't start on Ubuntu 24.04

[yorickdowne]

On Ubuntu 24.04, the AppImage fails to start with

[278568:0916/060133.481017:FATAL:setuid_sandbox_host.cc(158)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_Wagyu.EB2UBh/chrome-sandbox is owned by root and has mode 4755.

The workaround is to --appimage-extract, then mv squashfs-root wagyu && cd wagyu, and finally sudo chown root:root chrome-sandbox && sudo chmod 4755 chrome-sandbox. It can then be started with ./wagyuinstaller

The solution may be to have the right ownership and permissions for chrome-sandbox in the AppImage as distributed.