KDE automatic light-dark mode transition broken

Hi ! Posting this here because the fedora folks thinks it’s not their problem…

Automatic light-dark mode transition have been broken for me since fedora updated plasma to 6.6. Subsequent updates to 6.6 and 6.7 never improved the situation.

The automatic transition only works once, and then gets stuck in a weird hybrid state in the morning, apps correctly use the light mode, but the desktop stays stuck in dark mode. (See provided screenshot.) I have to manually reset it, every morning, by going to setting, click breeze, then click automatic, then apply.

Any idea of what might be going wrong ? Fedora Kinoite if that matters (And no, I’m fairly certain it’s not a flatpak issue)

Hey ! So I tried asking google gemini, but I’m pretty certain it’s just hallucinating bologna.

The Problem: In Plasma 6.6, KDE renamed the configuration key responsible for auto-switching to AutomaticDarkLightLookAndFeel.
The Result: On a cold boot, the background daemon checks kdeglobals for AutomaticDarkLightLookAndFeel. Because it only finds your older AutomaticLookAndFeel key, it assumes auto-switching is disabled and completely skips evaluating the sunset/sunrise times.
2. Missing Night Target (NightLookAndFeelPackage)Plasma 6.6/6.7 requires two separate target definitions to switch automatically:LookAndFeelPackage (the daytime theme)  NightLookAndFeelPackage (the nighttime theme)
Your file currently only defines the daytime theme (org.kde.breeze.desktop).
Even if the daemon knew it was night on startup, it wouldn't know which dark theme to switch into.  

Hey ! So an user on the Fedora forum have suggested to instead logout and log back in, it’s a whole lot more convenient, especially after binding a logout without confirmation keybind. But I’m still wondering what’s wrong and hoping I can find a more permanent solution.