After update to gThumb 3.12.6, it does not follow the Manjaro dark theme

[Yochanan]

I’ve also linked this post in the current Stable Updates thread:

Dark appearance of some applications broken after update

The adw-gtk3 package is now called adw-gtk-theme which replaces the old adw-gtk-theme. I know it’s a little confusing. With that change, you may need to set Legacy Applications to Adw-gtk3-dark in the Tweaks application under Appearance. It may have been set to the now removed Adw-dark previously.