Gnome window decorations and Wayland

How to get the windows decorations of apps like RawTherapee to look like they fit with adwaita when using Wayland?

Running under X-Org, I have it looking just fine. I’ve installed adw-gtk-dark and that takes care of all non-native apps. However, when running under wayland they look like strange, and squared instead of round like basically every other app looks.


Search the app’s settings to see if you can make it use the system’s titlebar/window decorations.

Some apps, however, require you to use their built-in UI or look like what you currently have. For such apps, I use only the built-in UI and remove the system’s titlebar/window decorations. This is easy to do in KDE (simple right-click) — not sure how it works in Gnome.