theme - dark/light Selector

It seems that when selecting either the dark or light theme on one theme, it automatically applies to all other themes, even those where I have dark/light mode disabled.

Now that I selected light mode, when I refresh the page it switches back to dark mode, and I can no longer get it to stay on light mode. It keeps resetting back to dark every time.

This is happening across all themes.

I have also tried CTRL + F5 to clear the cache, but it does not change anything — the page still resets back to dark mode.