Qt3DRender::QObjectPicker signals are emitted only while a mouse button is kept pressed, even if hover is enabled

On Qt3DRender::QObjectPicker documentation, it is mentioned:

... If hover is enabled, queries happen on every mouse move even if no button is pressed.

Testing with

setHoverEnabled(true)

it is observed that to emit these signals, a mouse button needs to be kept pressed:

Qt3DRender::QObjectPicker::entered

Qt3DRender::QObjectPicker::exited

Qt3DRender::QObjectPicker::moved

So enabling hover apparently has no effect. Not sure, maybe I'm missing something.