User can't tweak session (moving or changing pane/tab focus/position) via CLI if session is in background

[0komo]

Issue description

I can't tweak a background process that's created with zellij attach -b with zellij action. It'll only work once I entered the session and tweak it from there.

Minimal reproduction

1. zellij attach -b session
2. zellij edit .
3. zellij action new-pane
4. zellij action move-pane right
5. zellij action focus-next-pane

Other relevant information

• Zellij is installed via Nix on nixpkgs nixos-unstable branch.

[imsnif]

Doesn't the --session flag work in conjunction with these?