Some users want to use Live Preview with Qt3D.

However, it looks Qt3D cannot be used with Live Preview. Just show nothing.

One of main reasons looks that Transform type is refused in ui.qml files. (Then objects or cameras cannot be placed properly.)

Another barrier is that basic functions as Qt.vector3d() (or similar) cannot be used in ui.qml files. (Then it is impossible to specify position or rotation in ui.qml files.)

I attached a simple project with Qt3D.