They did not change any door, window, sunroof, etc... Practices. The things you mention were already in the 2018 MY line for other areas of the world.
Nothing about the paint changed. The same issues with paint adhesion exist on 2019 models as well. I've seen it with my own eyes. The small number of reports would not change that. The yellow was a whole different bird and it is not used anymore. No other paint recalls exist now or then.