The default behavior of the WinUI native Popup is to render within the bounds of its owner element. This means if the DataGrid reaches the end of the window and there is not enough space for the filtering control to draw, it will get clipped.

To avoid the clipping and allow the Popup to get displayed outside of the window, the ShouldConstrainToRootBounds property of the Popup should be set to false. 

Add an API in the RadDataGrid control to allow setting the ShouldConstrainToRootBounds option of the Popup.

In the meantime, you can disable the Popup constrain via an implicit Style in App.xaml:

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>                
            <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
            <ResourceDictionary Source="ms-appx:///Telerik.WinUI.Controls/Themes/Generic.xaml"/>
            <!-- Other merged dictionaries here -->
        </ResourceDictionary.MergedDictionaries>
        <Style TargetType="Popup">
            <Setter Property="ShouldConstrainToRootBounds" Value="False" />
        </Style>
        <!-- Other app resources here -->
    </ResourceDictionary>
</Application.Resources>

Create a combo box control that supports multi selecting, like the WPF version e.g.

https://docs.telerik.com/devtools/wpf/controls/radcombobox/features/multiple-selection

This is the same feature as the TickOrigin in the WPF chart: https://docs.telerik.com/devtools/wpf/controls/radchartview/axes/axis

The property should specify where the ticks originate.

Hi Team,

Please implement this feature for WinUI =>

• Docs: WPF ChartView - SplineSeries - Telerik UI for WPF.
• Completed FR: ChartView: Ability to control the tension of the spline

If you'd like to see a real test project that demonstrates the problem, you can use the repro attached to my Forum post => Spline series are incorrectly drawn in UI for WinUI.

Thank you,

Sébastien

Hi Team,

This is a request to add a Signature control to UI for WinUI. Where the user can use a Touch or Stylus input to add their signature to the app GUI. This signature can then be saved as either a bitmap or vector file.

Thank you,

Rodney

Implement print support when is supported from the framework:

Question: Printing in WinUI 3 Desktop · Issue #4419 · microsoft/microsoft-ui-xaml (github.com)

I use a lot of very cool UI controls found in the Telerik UI UP control suite; our customers love these controls:

• RichText for HTML 5 presentation of email messages
• ScheduleView
• Diagrams - we use drawings for BP, WF and Data flows
• Docking - super popular
• Syntax Editor
• CardView
• SpreedSheet
• Expression Parser
• Expression Editor
• Layout control
• Expander
• Desktop Alert
• Transition Control
• TimeBar
• Wizard
• Window
• SplashSceeen
• Callout
• Drag and Drop Interactions
• Calendar
• Persistence Framework
• more..

You guys already know these capabilities don't exist as polished UI controls WinUI 3; we can't adapt and migrate to WinUI 3 / MAUI and lose these excellent presentation and interaction models. What other types of data and information would help your team to prioritize the development of these controls for WinUI 3. I know we can use some WinUI 3 UI control in our WPF apps, but going the other way is impossible. 

https://github.com/microsoft/WindowsAppSDK/discussions/465#discussioncomment-395712

Like many other technology companies out there in the wild, we aren't a UI Control development company as core skills focus on other technologies; however, we need the absolute very best 3rd part commercial grade and hi-fidelity UI controls to start with a base.  So for us, I'm not going to invest in a UI framework that turns the company into a Telerik - that's not what we do. Yes, we do develop custom controls, but it is the exception.