'mapviewer' crashes randomly

Tested when linked against the OpenSSL binary (x64) shipped with Qt binary from the online installer. 

Steps to reproduce:

1. Install Qt 5.13.1 (msvc2017_x64) binary and OpenSSL binary (x64) via online installer from staging repository
2. set PATH to Qt's qmake and qt\Tools\OpenSSL\Win_x64\bin
3. Build and run 'mapviewer'

Expected result:

The executable doesn't crash

Actual result:

The application doesn't crash every time, but when it does the VS debugger says: Unhandled exception at xxx (qtposition_winrt.dll) in qml_location_mapviewer.exe: xxx: Access violation reading location xxx. See the image attached.