Can't drag a ScrollBar

[igor_stravinsky]

I've got a Qt 5.10 Quick Controls 2 project.

In it, I have a ScrollView, which is working with gestures (e.g. when I use a flick gesture on my Apple Magic Mouse), but is unresponsive when I try to click on the scroll thumb and drag it.

ScrollView{
            id:myScrollView
            contentHeight: 1000

            ScrollBar.vertical: ScrollBar{
                policy: ScrollBar.AsNeeded
                anchors.top: parent.top
                anchors.right: parent.right
                anchors.bottom: parent.bottom
                active:pressed
            }
}

I've tried changing the ScrollBar interactive property, but that doesn't seem to effect the behavior.

What's the secret to making a scroll bar respond to mouse clicks and mouse wheels?