[193209:0407/164939.241277:FATAL:setuid_sandbox_host.cc(157)] 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_jitsi-KCGvvK/chrome-sandbox is owned by root and has mode 4755.

I was a happy user of the previous version, but now it fails with the above error.
I'm on an Debian unstable system (x86_64), with kernel 5.5.1

As a workaround, I found out (see electron/electron#17972) that

sudo sysctl kernel.unprivileged_userns_clone=1

makes it work again.