Why does Firefox installed in WSL2 on Windows 11 have a box when opened, How can I remove this box?

[Holinc19]

Windows Version

Microsoft Windows [版本 10.0.26100.3194]

WSL Version

2.3.26.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.167.4-1

Distro Version

Ubuntu 24.04.1 LTS

Other Software

No response

Repro Steps

1. root@DESKTOP-ILBE48G:~# snap install firefox
2. root@DESKTOP-ILBE48G:~# firefox

Expected Behavior

Why does Firefox installed in WSL2 on Windows 11 have a box when opened, while it doesn't on another computer? How can I remove this box?

Expected：

Actual Behavior

Maybe something is wrong here?

Diagnostic Logs

No response

[github-actions]

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[batonac]

Apparently the WSL2 Wayland compositor doesn't support client-side decorations. I can't imagine that's high priority.

[crramirez]

Hello @Holinc19,

Firefox was not able to connect to the Wayland server, and it is failing back to Xorg, which is managed by XWayland who is producing this frame. See this error:

You can see that this Firefox is installed as a snap; maybe the other one was installed directly instead of a snap (just a guess).

@batonac this is because it is using XWayland.

Regards,
Carlos