TabView crashed on second Loaded event

[eugenegff]

Describe the bug
TabView crashed on second Loaded event if databound, duplicates count of tab items if not databound.

Steps to reproduce the bug

TabViewCrash.zip

1. Unzip, build and run attached TabViewCrash project
2. Click on 'Navigate Forward from MainPage to TestPage' button.
   There would be databound TabView with "Tab 1" and "Tab 2" tabs,
   and another not databound one with "Tab 11" and "Tab 12" tabs.
   Note that width of tabs is not equal - separate issue.
3. Click on 'Navigate Backward from TestPage to MainPage' button.
4. Click on 'Navigate Forward from MainPage to TestPage' button again
   Crash in TabView::OnListViewLoaded for databound TabView.
   If first databound TabView would be commented out - there would be no crash, but tab count of second TabView would be duplicated.

Expected behavior
Results of second navigation to TestPage results should be the same as results of first navigation, i.e.
there should be databound TabView with "Tab 1" and "Tab 2" tabs,
and another not databound one with "Tab 11" and "Tab 12" tabs.

Screenshots

Version Info

NuGet package version:
Microsoft.UI.Xaml 2.2.190822001-prerelease

Windows 10 version	Saw the problem?
Insider Build (xxxxx)
May 2019 Update (18362)	Yes
October 2018 Update (17763)
April 2018 Update (17134)
Fall Creators Update (16299)
Creators Update (15063)

Device form factor	Saw the problem?
Desktop	Yes
Mobile
Xbox
Surface Hub
IoT

Additional context
Note, that page with TabView had NavigationCacheMode=Required, that caused unloading and reloading without destruction.

[eugenegff]

Note, that Loaded event could occur several times. I suspect, that OnApplyTemplate could occur several times too.

[mdmozibur]

Faced the same problem. The TabItems Collection seems to behave weirdly. TabItems.Clear() generates error : Attempted to read or write protected memory. Any update on this issue?