The new profile manager of Firefox doesn't work correctly.

This problem seems to be specific to the Kinoite.

Problem

When add new profile from the new profile manager, the added profile is unable to edit the profile.

The profile edit window is blank. And its name is not shown in the hamburger menu.

How to reproduce

1. Click Hamburger menu => Profiles => New profile.
2. Then, you will see a new blank window.

This blank window is problematic. It should be the settings screen of the new profile.

Environment

The environment to reproduce is the following.

• Fedora Kinoite 43
• Kernel 6.18.8-200.fc43.x86_64
• Firefox 140.0.7 (Flatpak)

Other platform

I have tested the Firefox flatpak version on the serveral platforms. Only Kinoite has a problem.

Screenshots

Please see the screenshot of the problem.