Inspector: see the runtime Adwaita.css
With issues like this, it's great that the Inspector is pointing to the line in Adwaita.css
that the property is set at. However the CSS being generated from the SCSS source and currently being a gresource rather than a file somewhere, for many of us running inside a contained environment, it's actually quite tricky to figure out where exactly this rule lives.
For gtk it's not desireable to use the source maps, because they're json and not parsable inside gtk. But it would be extremely useful to conveniently see at least the generated Adwaita.css that the app or specifically the Widget Factory is using and seeing that line highlighted in a bit of a context to be able to identify where the property is actually set.
/cc @nana-4