Creator crashes from autocomplete + property

Creator reliably crashes hard on both Mac and Windows during what appears to be autocomplete.  Take the following minimal example:

import QtQuick
Window {
    id: root
    visible: true
    width: 640
    height: 480
    Rectangle {
        width: 200
        height: 200
        Text {
            text: "Goodbye World"
        }
    }
}

Then add a property to the Rectangle before the Text element.  Try to add:

property int y: parent.height

Creator will reliably crash hard, losing all unsaved work to that point and the session.  Most of the time I get to the "he" in height before it crashes, but this varies somewhat, and on MacOS the timing is different; typing slowly makes it crash more reliably.

This appears to be related to property.  If you type in the line 'backwards', by first typing y: parent.height, then adding property int  in front of that, everything works fine.  Autocomplete while typing just y: parent.height seems to work fine.

MacOS reports this as a segfault:

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000020
Exception Codes:       0x0000000000000001, 0x0000000000000020