Broken language selector style after update to v1.11.0

[McPringle]

Describe the bug
After my update from v1.10.0 to v1.11.0 the language selector style is broken. It does not show a dropdown as expected. It is now shown as a (misaligned) list.

To Reproduce
Steps to reproduce the behavior:

1. Update theme to v1.11.0
2. Run hugo server

Expected behavior
The language selector should still be shown as a dropdown.

Screenshots
Screenshot with theme version 1.10.0:

Screenshot with theme version 1.11.0:

Desktop (please complete the following information):

• OS: Windows
• Browser: Chrome, Firefox
• Version of the Theme: 1.11.0
• Version of Hugo: v0.104.2-84cbe724983b4b6153fd39aae0888cbb89a56cda windows/amd64 BuildDate=2022-09-29T10:31:09Z

Smartphone (please complete the following information):
No test from myself on a smartphone.

Additional context
I only added some CSS for the profile picture:

img.sidebar__introduction-profileimage {
    filter: grayscale(100%);
}

img.sidebar__introduction-profileimage:hover {
    filter: grayscale(0);
}

That should not have any effect to the language selector.

[lxndrblz]

@McPringle Thanks for reporting this issue. I am having trouble reproducing it on any of my systems. Do you have a link which shows the issue in action?

[McPringle]

The repository is private, I'll prepare a minimal example for you soon.

[McPringle]

I made the repository of my website public. There is nothing to hide in there. :-)

The repository URL is: https://github.com/McPringle/mcpringle.github.io
The website address (GitHub Pages) is: https://fihlon.swiss/en/

I guess it has to do with changes in navbar.html. There was a refactoring of the language selector on February 5th and 6th this year, right between the releases of v1.10.0 and v1.11.0.

[lxndrblz]

@McPringle Is that issue still current? Otherwise I would go ahead and close the issue.