Since a couple of days, setting the theme to "browser default" doesn't respect the actual browser light or dark theme and is always dark, which is very annoying and makes it harder to read.
How can I get it back to light mode when the browser is configured in light mode?
So weird, but actually changing your desktop theme to "light mode" forces it to stick to "light mode." If that doesn't work, look for the setting in your web browser. For me, it was all about changing the setting for my desktop theme. When we're all dead, I suppose you can set each web site to dark or light mode, at whim?
My desktop is set to light mode. Changing the preferred mode in the devtools doesn't change anything. On mobile changing the theme of the whole site doesn't work (but it does for other sites).
I'm on Firefox, Arch Linux and Android, but it also happens in a Chrome-based browser I tried.