QML ListView/Loader regression in qt/qt-qml:4.7 repo

This is with Qt Declarative build from qt/qt-qml:4.7 repo with HEAD at
711d3614ed64b2e962e07f7070d9834f85231ab5

1) Start tesla
2) Unlock the lock-screen
3) Note that the first application in the app-switcher list is the maps application,
while the caption above it is "History"
4) Slowly flick to the next item and note how the maps image turns into the call
history image, which is what it should have been all along.

N.B. the maps app image actually belongs to the third app from the end in the list,
and is one of the images loaded statically (see appSwitcher/SwitcherModel.qml)
while the call log image is loaded and added to the switcher list by the "phone"
application that is loaded at startup using a QML Loader element (see Main.qml
line 134 and phone/Phone.qml line 17).