when changes are made in the xaml, they are not applied live in the running app using the Hot Reload

ArgumentOutOfRangeException is thrown when updating items outside of the viewport in grouped scenario with sticky group headers.

The bug occurs on Android when removing an item from a group and using sticky group headers.

There is a slow performance when scrolling, expand/collapse items when the ListView Groups are sticky and GroupHeaderTemplate is used. 

Workaround: 
1. Set IsGroupHeaderStickty to false. 

or

2.. Use the default group header template