UI issue on UWP Master build using "Compile with .NET Native tool chain" and "Optimize code" options in Visual Studio build settings.

Issue repro screenshot: https://gyazo.com/304e51161edcc980bb856731b5bbc7a1
Expected result: https://gyazo.com/075730d7bee5091f0324244fc4f826e4

Reproducible on 5.2.4f1, 5.3.1f1.

Repro steps:
1.open "Test.zip";
2. build to WSA Universal 10 platform (xaml and d3d gives the same results).
3. open generated solution. Change to Master configuration and in build options make sure "Compile with .NET Native tool chain" and "Optimize code" options are checked.
4. build and run the project.
5. when app loads, at the right bottom corner press "page 2". Now press "Test" button to load list boxes.

Workaround: on master build, don't use "Optimize code" option in VS build settings.