Firejail + tmux: tmux windows are labeled "firejail" instead of the actual application

[jovial-snyder]

Description

This is a continuation of an issue that was closed in 2018 by @chiraag-nataraj with no particular reason (the other issue he mentions discusses a completely different topic that was also never resolved). I am creating this new one because the problem still persists. I can't be the only one who uses tmux and firejail, so I am hoping that someone found a workaround.

Problem: When using firejail inside tmux, the tmux window takes the name "firejail" instead of the actual application executed by firejail:

If this problem is not for firejail to solve, then feel free to close this issue.

Steps to Reproduce

1. Open any terminal emulator
2. Start tmux
3. Start an application with firejail (e.g. firejail ngrok)
4. See that the tmux window title is now labeled "firejail" as long as the application is running
5. Now do the same with other applications in other tmux windows, and you end up with many windows labeled "firejail" instead of the actual application ("ngrok"). See screenshot above. This makes it hard to find a window.

Expected behavior

4. See that the tmux window title is now "ngrok" and not "firejail"

Environment

• Name/version/arch of the Linux kernel (uname -srm): Linux 6.11.0-12-generic x86_64
• Name/version of the Linux distribution (e.g. "Ubuntu 20.04" or "Arch Linux"): Ubuntu 24.10
• Version of Firejail (firejail --version): 0.9.72