It took less than an hour of quick hack to get rid of librsvg and replace it with Adobe Native + its cairo backend from Suziki san. There is a rendering bug filed ashttps://github.com/adobe/svg-native-viewer/issues/185
I said it is between librsvg and skia. The code diff is athttps://github.com/HinTak/harfbuzz-python-demos/blob/master/svg-native/ft2-demos-Adobe-SVG-Cairo.diff (Since I did configure --with-librsvg=no, had to have cairo headers and libs manually... you cam figure out better way of doing that...) So we have 5 svg-hooks now (in history order): librsvg + cairopycairo + librsvg gobject introspection (python)skia m103+Adobe Native + skia (any/older version)Adobe Native + cairo