Having a TreeView on a page, and when navigating forward backward to this page, start expand collapse items with many children, the expand indicator is misplaced: 

If you have a TreeView with LoadChildrenOnDemand enanled and CheckBoxMode set to "Recursive", when the user checks an unexpanded item ( which children are not loaded yet), the expand icon disappears and the user is not able to expand the item.

If we have a TreeView control inside a Popup, and the TreeView is operated with a finger, everything works perfectly.
However, if there is interaction with the treeview items with a stylus (Samsung Galaxy Tab S6), the app crashes regularly.