Add the RadRangeSlider, or RadSlider inside a ScrollView, for example at the end of the ScrollView. Then start scrolling the content inside the ScrollView. Try sliding the thumb of the RadRangeSlider or RadSlider, The thumb locks and will no longer move. The issue happens only on Android and iOS. 

On Android you can unlock the thumb by tapping on it, while on iOS there isn't an option, the thumb does not move.

The DataGrid will crash when there is a bunch of CollectionChanged events with Grouping enabled. This happens in 6.6.0, 6.7.x and 6.8.x versions of the Telerik DataGrid. 

Expose command that executes when checkbox state changes.

Currently I am using EventToCommandBehavior:

    <VerticalStackLayout>
        <telerik:RadCheckBox x:Name="checkbox">
            <telerik:RadCheckBox.Behaviors>
                <telerik:RadEventToCommandBehavior EventName="IsCheckedChanged" Command="{Binding CheckedCommand}" />
            </telerik:RadCheckBox.Behaviors>
        </telerik:RadCheckBox>
    </VerticalStackLayout>

public class ViewModel : NotifyPropertyChangedBase
{
    public ViewModel()
    {
        this.CheckedCommand = new Command<IsCheckedChangedEventArgs>(this.CheckBoxUserCommand);
    }

    private void CheckBoxUserCommand(IsCheckedChangedEventArgs obj)
    {
        // logic here:
    }

    public ICommand CheckedCommand { get; set; }  
}

When we set a corner radius for the header the background is overlapping the border so header will not have rounded corners.

    <Style TargetType="telerik:AccordionItemHeader">

        <Setter Property="BackgroundColor" Value="Blue" />

        <Setter Property="BorderColor" Value="Red" />

        <Setter Property="BorderThickness" Value="2" />

        <Setter Property="CornerRadius" Value="8" />

    </Style>

</telerik:AccordionItem.Resources>

When binding StringFormat to a NumericInput and the Format is set (or changed) after the value is set, the value is not displayed in the correct format. Only if you click inside the NumericInput and then leave it, the value is displayed with the correct format. But that’s not working for a read-only NumericInput.

When selecting MonthView from the 3-dot menu on the Scheduler component, the app hangs on iOS. 

To workaround the issue add the following to the Page where the Scheduler resides:

xmlns:ios="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific;assembly=Microsoft.Maui.Controls"
ios:Page.UseSafeArea="True"