How to reproduce: set the MinimumSize property of a RadButton in a DPI-aware app
Workaround: 
Public Class RadForm1
    Dim minMaxStack = New Stack(Of Dictionary(Of Control, Tuple(Of Size, Size)))()

    Sub New()
        InitializeComponent()
    End Sub

    Protected Overrides Sub HandleDpiChanged()

        Dim scaleFactor As Single = 1.0F
        Dim oldDpi = GetType(RadFormControlBase).GetField("oldDpi", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(Me)
        Dim currentDpi = GetType(RadFormControlBase).GetField("currentDpi", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(Me)

        If oldDpi <> 0 Then
            scaleFactor = CSng(currentDpi) / oldDpi
        ElseIf oldDpi = 0 Then
            scaleFactor = CSng(currentDpi) / 96.0F
        End If

        If scaleFactor = 1.0F Then
            Return
        End If

        Me.SaveMinMaxStates()
        MyBase.HandleDpiChanged()
        Me.RestoreMinMaxStates()

    End Sub

    Private Sub SaveMinMaxStates()
        If Me.minMaxStack Is Nothing Then
            Me.minMaxStack = New Stack(Of Dictionary(Of Control, Tuple(Of Size, Size)))()
        End If

        Dim minMax As New Dictionary(Of Control, Tuple(Of Size, Size))()
        Dim queue As New Queue(Of Control)()

        For Each ctrl As Control In Me.Controls
            queue.Enqueue(ctrl)
        Next

        While queue.Count > 0
            Dim ctrl As Control = queue.Dequeue()
            If TypeOf ctrl Is RadControl Then
                minMax.Add(ctrl, New Tuple(Of Size, Size)(ctrl.MinimumSize, ctrl.MaximumSize))
                ctrl.MinimumSize = Size.Empty
                ctrl.MaximumSize = Size.Empty
            End If

            For Each childControl As Control In ctrl.Controls
                queue.Enqueue(childControl)
            Next
        End While

        Me.minMaxStack.Push(minMax)
    End Sub

    Private Sub RestoreMinMaxStates()
        Dim minMax As Dictionary(Of Control, Tuple(Of Size, Size)) = Me.minMaxStack.Pop()
        Dim queue As New Queue(Of Control)()

        For Each ctrl As Control In Me.Controls
            queue.Enqueue(ctrl)
        Next

        While queue.Count > 0
            Dim ctrl As Control = queue.Dequeue()

            If minMax.ContainsKey(ctrl) Then
                ctrl.MinimumSize = minMax(ctrl).Item1
                ctrl.MaximumSize = minMax(ctrl).Item2
                minMax.Remove(ctrl)
            End If

            For Each childControl As Control In ctrl.Controls
                queue.Enqueue(childControl)
            Next
        End While

        minMax.Clear()
    End Sub
End Class

Bitdefender moved a threat to quarantine. File name: c:\program files (x86)\progress\telerik ui for winforms r3 2017\examples\medicalapp\medicalappcs\bin\medicalappcs.exe. It is recommended that you run a System Scan to make sure your system is clean.

Extract the source in a folder like this: "Telerik UI for WinForms R3 2017"

Workaround: 
Remove the spaces in the path.

Workaround:
1. Explicitly set the font of the parent of the controls.
2. Use a custom theme with the FontSegoeUI8.25 repository: check the attached screenshot

Workaround: 
1. Explicitly set the font of the checkbox with code.
this.radCheckBox1.Font = new Font("Segoe UI", 9.0f, FontStyle.Regular);

2. Use the attached custom theme.

To reproduce:
1. Add HelpProvider on the form.
2. Add RadButton(or any other RadControl).
3. Use the following code:
this.helpProvider1.SetHelpString(this.radButton1, "RadButton help message.");
this.MaximizeBox = false;
this.MinimizeBox = false;
this.HelpButton = true;
4. Run the form, click form's help button and then click the button. - Help dialog is shown and instantly closed.

Workaround:
Subscribe to the control's HelpRequested event and show a tooltip.
this.helpProvider1.SetShowHelp(this.radButton1, false);
this.radButton1.HelpRequested += Control_HelpRequested;

private void Control_HelpRequested(object sender, HelpEventArgs hlpevent)
{
    Control control = sender as Control;
    if (control == null)
    {
        return;
    }

    hlpevent.Handled = true;
    RadToolTip tip = new RadToolTip();
    tip.Show(this.helpProvider1.GetHelpString(control), 3000);
}

How to reproduce: check the attached screenshot

Workaround create a custom RadPrintPreviewDialog
public class MyRadPrintPreviewDialog : RadPrintPreviewDialog
{
    protected override WatermarkPreviewDialog CreateWatermarkDialog()
    {
        WatermarkPreviewDialog dialog = new WatermarkPreviewDialog(this.Document);

        RadPageViewPage pageText = (RadPageViewPage)dialog.Controls["radPageView1"].Controls["pageText"];
        ((PlusMinusEditor)pageText.Controls["plusMinusEditorTextHOffset"]).TextBox.Width = 43;
        ((PlusMinusEditor)pageText.Controls["plusMinusEditorTextVOffset"]).TextBox.Width = 43;
        ((PlusMinusEditor)pageText.Controls["plusMinusEditorTextAngle"]).TextBox.Width = 43;
        ((PlusMinusEditor)pageText.Controls["plusMinusEditorTextOpacity"]).TextBox.Width = 43;
        RadPageViewPage pagePicture = (RadPageViewPage)dialog.Controls["radPageView1"].Controls["pagePicture"];
        ((PlusMinusEditor)pagePicture.Controls["plusMinusEditorImageHOffset"]).TextBox.Width = 43;
        ((PlusMinusEditor)pagePicture.Controls["plusMinusEditorImageVOffset"]).TextBox.Width = 43;
        ((PlusMinusEditor)pagePicture.Controls["plusMinusEditorImageOpacity"]).TextBox.Width = 43;

        return dialog;
    }
}

To reproduce: if you set in the app.manifest file  <dpiAware>false</dpiAware>, the controls still scale when changing DPI.

Workaround:
Public Class RadForm1
    Protected Overrides Sub OnLoad(e As EventArgs)

        Dim allowTheming = DirectCast(GetType(RadForm).GetField("allowTheming", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(Me), Boolean?)

        Dim behavior As ThemedFormBehavior = TryCast(Me.FormBehavior, ThemedFormBehavior)
        If behavior IsNot Nothing AndAlso allowTheming.HasValue AndAlso behavior.AllowTheming <> Me.AllowTheming Then
            behavior.AllowTheming = allowTheming.Value
        End If

        If Me.IsDesignMode Then
            GetType(RadFormControlBase).GetField("initialFormLocation", BindingFlags.Instance Or BindingFlags.NonPublic).SetValue(Me, Me.Location)

            Return
        End If

        Dim mi As MethodInfo = GetType(Form).GetMethod("OnLoad", BindingFlags.Instance Or BindingFlags.NonPublic)
        Dim ptr As IntPtr = mi.MethodHandle.GetFunctionPointer()
        Dim formOnOnLoad As Action(Of EventArgs) = DirectCast(Activator.CreateInstance(GetType(Action(Of EventArgs)), Me, ptr), Action(Of EventArgs))

        formOnOnLoad(e)
    End Sub

End Class

A pipeline control that have multi stage. Can dynamically add button (stage) to the stage list. Each stage can have two caption (Text) properties to display stage name and item in stage. Each stage also have onclick trigger.

Currently all the relevant methods, properties and classes are marked as internal. Expose the following:

In ComponentBehavior - ScreenPresenter, ShowScreenTip;

and the class ScreenTipPresenter.

Note that more methods, properties or classes may be exposed in the process of investigation.

Add radial menu like the one in the Telerik UI for Windows 8 XAML.

To reproduce:
Create a RadRibbonForm and using UI Spy move over the Close, Minimize or Maximize buttons. You will notice that the buttons cannot be selected since they do not have accessibility objects.