Available in the 2018 R2 SP release.

If you have set MaxDate in the Calendar and you swipe the view to see the previous month, it is not possible to navigate back to the month that has the MaxDate. If you change the month through the MonthView -> everything starts working.

Available in the 2018 R2 SP release.

Multiple selected items that were selected become unselected when being filtered out.

Steps to reproduce:

1 - Select multiple items
2 - Apply filter where some or all of the selected items are filtered out
3 - Remove filter

Observe: 

1 - The items that were previously selected have lost their selection state after returning
2 - Items that were not filtered, or selected while filter was active, retain selection state

AddEditorForProperty method is not respected, the default editor is used instead. 

As a workaround, please use SetEditorProvider method  (https://docs.telerik.com/devtools/xamarin/nativecontrols/android/dataform/dataform-features) in order to create custom editors.

Chart: [iOS] A needless label is displayed at the end for DateTimeContinuousAxis

When there are only two items in the ItemsSource and users reorder them, the underlying collection is not reordered

Edit: Avalable in R3 2017 SP release.

When configuring different layouts with images of different length and switching between them, the images are displayed incorrectly - in both layouts there are images with different length.
Available in the R3 2017 release.

If you set a custom palette to an iOS Forms Pie chart with 2 or more colors, only the first color will be shown for the whole pie regardless of the pie pieces count that you have. If works find for Android and Windows Phone.

I met an issue related to Xamarin.Forms RadListView (telerik component) which occurs only on iOS platform, while working fine on Android.
More details here - http://www.telerik.com/forums/radlistview-not-fitting-on-ios

Available in minor release 2017.2.0602. It will also be available in the R2 2017 SP release.

When you install the Progress Telerik UI For Xamarin application on an iOS Device, navigate to some example and try to view its code - the application hangs. 

The issue is fixed in the latest version of the application.

When creating a Xamarin.Forms solution using the Telerik project wizard, the individual projects are not named properly.

See the attached screenshots for reference:

Screenshot1 - File > New, where I named the solution "MySolutionName"
Screenshot2 - After project generation, the individual projects are still using "Telerik.Xamarin.XXX" when it should be "MysolutionName.Mobile.XXX"

When you need to apply some customizations for the labels in iOS and you have created a custom renderer, the LabelFormat initially set is lost and you need to explicitly update the text of the Label. 

Available in the R3 2017 release.

Check the attached image.

Available in minor release 2017.3.927. It will also be available in the R3 2017 SP release.

Workaround: Use the Small Percentage(http://www.fileformat.info/info/unicode/char/FE6A/index.htm) or Fullwidth Percent Sign(http://www.fileformat.info/info/unicode/char/ff05/index.htm).