[Bug]: "Display Tab Bar underneath the Toolbar" doesn't save setting after browser restarted

[audio101]

Pre-Submission Checklist

• [ ] I have checked the existing/closed issues to ensure this issue has not already been reported.
• [ ] I am using the latest supported version of the browser.
• [ ] I have tried disabling all browser extensions/add-ons to rule out interference from these.
• [ ] I have tried clearing the browser cache and cookies.
• [ ] I have tried to create a new profile and the issue still occurs.
• [ ] I have provided detailed step-by-step instructions on how to reproduce the issue.
• [ ] I have included relevant screenshots or console outputs.
• [ ] I have checked this problem is not ocurring in the latest version of Firefox ESR.
• [ ] This issue is specific to this browser and does not occur in other browsers.

Bug Summary

After browser is restarted or new browser loaded, if "Display Tab Bar underneath the Toolbar" Design setting is selected, the setting does not save & reverts to "Default" radio button & Tab Bar position.

Reproduction Steps

1. Select "Display Tab Bar underneath the Toolbar".
2. Close/restart browser.
3. Observe tab(s) positioning change from previously underneath address bar, to above the address bar (default).
4. Observe settings radio button change: "Design" > "Tab Bar" > "Default"

Expected Behavior

"Display Tab Bar underneath the Toolbar" setting should always save tab setting despite restarting/reloading the browser.

Actual Behavior

"Display Tab Bar underneath the Toolbar" does not save tab setting.

Screenshots

Browser Version

v11.3.3 (AUR: midori-bin 11.3.3-1)

Operating System

Manjaro Linux XFCE

Additional Context

No response