ExpandCollapse Indicator is still visible when deleting all children of a branch

 

Workaround:

Reser the TreeView ItemsSource

When the TreeView has more than ~100 notes and the user clicks on the scrollbar and scrolls up or down, the app crashes occasionally with exception "Object reference not set to an instance of an object" on UWP. 

TreeView memory leaks on iOS

If there is an input control (Editor, Entry) inside the ItemTemplate of the TreeViewDescriptor and its Text is bound to any property of the data item, changing the ItemsSource of the TreeView raises an exception of type AccessViolationException.

when custom renderer is registered, it is not applied to the TreeView control. The default one overrides the custom one.

When using MvvmCross framework to load data when the View appears on the screen the ListView cannot be scrolled. It starts jumping rapidly instead.

Workaround:
Load the data in the constructor of the respective ViewModel instead inside its ViewAppearing() method.

When we remove the last item from the observable collection we get an unhandled exception like this:

"Attempt to delete item 0 from section 0 which only contains 0 items before the update"

Above the TreeView there is a Telerik.SegmentedControl, with two segments. If I click on one of the segments the ItemsSource of the TreeView gets updated by using .Add() or Remove() of the ObservableCollection.

If every Segment is called for the first time there is no problem. But if I want to clear all Items and display the empty treeView I get the following Exception.
Java.Lang.IndexOutOfBoundsException: 'Inconsistency detected. Invalid item position 0(offset:-1).state:14 md5a5af569a83c1a3f5c3a8a63bd7d39860.RadExtendedListView{c6376f1 VFED..... ........ 0,0-1200,840 #5}, adapter:com.telerik.widget.list.ListViewWrapperAdapter@b30041b, layout:android.support.v7.widget.LinearLayoutManager@3fd42d6, context:md5db22775bb305bf9756607f4261793d51.MainActivity@1d6cd4f

If customers try to load struct or readonly struct into the TreeView, the items does not get displayed.

Available in minor release 2018.2.727.250. It will also be available in the R3 2018 release.

If the control is not yet visualized on the screen and the method is invoked an exception is thrown.

When we have grouping enabled and 2 properties with same name (i.e. TestId and TestID), the ListView is not rendering (or at least not showing any records)

When TreeView has a source with more than 120 items and is placed inside a StackLayout, it is not properly rendered (Layout Cycle Detected exception is raised).

Available in R3 2018 release.

Calling TreeView's CheckItem method when the control is loaded, so that you mimic a "pre-checked" TreeView results in NullReferenceException in RadTreeView.Checkbox ToggleItem method.

When CollapseAll method is called, if the first element is out of the screen (after a scroll), the treeview crashes.

Available in minor release 2018.3.1109. It will also be available in the R1 2019 release.

TextCellTextColor property of the TreeViewItemStyle is not respected.

When the collection set as ItemsSource of the TreeView is cleared and new item is added, an exception of type NSInternalInconsistencyException is raised on iOS.
Also clearing the ItemsSource is not reflected in TreeView.

Trying to collapse an item after reinitialization of the RadTreeView causes the exception. The scenario can easily be recreated if all items from the ItemsSource are removed one by one and then added again then expand and collapse an item.