The reworked handling of assets:/ seems to have quite some bugs that are hard to explain.
Iterating over a list of 9 files named 1st.ext to 9th.ext in an assets subdirectory omits several entries:
Trying to load a QML file from an asset URL also fails:
Tying to load the same qml file using QFile seems to succeed:
A complete qmake project with all of the above code as well as the asset files is attached.