Run example attached and start click button, it will load and unload the MainPage that contain navigationbar (ListView) and StackView where the root Item always will be replaced by the Item selected from navigationbar.
MainPage implements concept from ekkescorner's Drawer Navigation App (https://appbus.wordpress.com/2016/06/20/drawer-navigation-app/)

It will crash soon or later.
Also switching between menus in navigationbar (Item1 ... Item4) leads to crashes.

It crash randomly usually without any debug messages, but sometimes I saw this:

F/libc    ( 6530): invalid address or address of corrupt block 0x7c7df468 passed to dlfree
F/libc    ( 6530): Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1), thread 6585 (Thread (pooled))

or this:

F/libc    (16328): Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 16422 (Qt3DCore::QAspe)

There is the Scene3D in application. I did try without it but app crashed once. Without Scene3D it hard to crash app, one needs to furiously tap on buttons.

I've never got crash on desktop (Windows 7).