Font Loaders do not work as in demo video.

As following the video, https://youtu.be/Z3uPoe-4UAw , font loaders do not work as demonstrated.

Even though I manually write Font Loader types in QML, they do not appear in Navigator as @2:20 of the video. Screenshot is Fonts.png

Also, the written Font Loaders cannot be used in the target text as @3:06 of the video. Screenshot is Fonts2.png.

I attached my project as cluster.zip.