On linux with bitwarden flatpak: no `.bitwarden-ssh-agent.sock`

I installed the Bitwarden flatpak and enabled the ssh agent.

However, I do not see the socket when I look for it.

# Flatpak
export SSH_AUTH_SOCK=/home/<user>/.var/app/com.bitwarden.desktop/data/.bitwarden-ssh-agent.sock

I think this is a know bug.