Qml crash on released memory

Build and run attached project (MSVS). Then:

1) Click any item in list. Dialog appears.
2) Click any item in list in opened dialog. New dialog appears.
3) Repeat step 2 until you see messages "ObjectRef #xxx deleted" in console output.
*maximize window to speedup process
4) Close dialog.
5) Click any item in the list on the main screen. Application crash on released memory occurs.

Crash occurs in MouseArea click handler in TestItem.qml:

onClicked: itemClicked(testItem);

where testItem is value assigned to the list item by ListView (and managed by declarative engine).