Libreoffice dark theme does not work

Hi, I’ve been trying to use the dark theme for Libre Writer on Windows 10 but it does not turn on.

Here
It says " Tools > Options > LibreOffice > Advanced. Check “Enable experimental feature (may be unstable). LibreOffice will ask for restart and then automatically switch the UI to dark mode (…)”

Except it absolutely does not. It looks exactly as it does before. When I enable dark mode in settings only the page turns dark but not the rest. I can change icons and bar manually but it looks really bad and not at all like shown in the link above.

I would have liked to show more screenshots, however I am only allowed to post a single one because otherwise I guess the website would explode. Anyways, what can I do to make it look like that? Or is it not possible on Windows 10? Thanks in advance.

It will work only if you have Dark Mode set in Windows: Start menu > Settings > Personalisation and select a dark theme