When  you increase the SmallTickFrequency and use the TrackBarSnapModes.SnapToTicks, moving the thumb with the mouse should snap to the visible ticks. 

 How to reproduce
1. Drag a RadTrackBar from the toolbox
2. Set the Maximum property, e.g. to 100, set the Minimum property, e.g. to 50
3. Close and reopen the designer, you will notice that the Minimum property of the control is not the expected value of 50, although it has been properly serialized in the designer file.

Workaround: 
set the Minimum property in the Load event of the form

Workaround: use the attached custom theme

To reproduce:
- Add waiting bar to a user control.
- Try setting the assoitad control in the smart tag.
 
 Workaround:
- Set it in code.

To reproduce:
private void radButton1_Click(object sender, EventArgs e)
{
    radTrackBar1.Maximum = 100;
    radTrackBar1.Value = 200;
  
}

How to reproduce: 
partial class Form2
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.radTrackBar1 = new Telerik.WinControls.UI.RadTrackBar();
            ((System.ComponentModel.ISupportInitialize)(this.radTrackBar1)).BeginInit();
            this.SuspendLayout();
            // 
            // radTrackBar1
            // 
            this.radTrackBar1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
            this.radTrackBar1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(233)))), ((int)(((byte)(240)))), ((int)(((byte)(249)))));
            this.radTrackBar1.Font = new System.Drawing.Font("Segoe UI", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.radTrackBar1.LabelStyle = Telerik.WinControls.UI.TrackBarLabelStyle.BottomRight;
            this.radTrackBar1.LargeChange = 5;
            this.radTrackBar1.LargeTickFrequency = 139;
            this.radTrackBar1.Location = new System.Drawing.Point(36, 69);
            this.radTrackBar1.Maximum = 140F;
            this.radTrackBar1.Minimum = 1F;
            this.radTrackBar1.Name = "rTrackBar1";
            this.radTrackBar1.Size = new System.Drawing.Size(243, 33);
            this.radTrackBar1.SmallTickFrequency = 5;
            this.radTrackBar1.SnapMode = Telerik.WinControls.UI.TrackBarSnapModes.None;
            this.radTrackBar1.TabIndex = 0;
            this.radTrackBar1.Text = "rTrackBar1";
            this.radTrackBar1.ThemeName = "ControlDefault";
            this.radTrackBar1.TickStyle = Telerik.WinControls.Enumerations.TickStyles.None;
            this.radTrackBar1.Value = 80F;
            ((Telerik.WinControls.UI.RadTrackBarElement)(this.radTrackBar1.GetChildAt(0))).MinSize = new System.Drawing.Size(100, 0);
            ((Telerik.WinControls.UI.TrackBarBodyElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1))).Margin = new System.Windows.Forms.Padding(7, 0, 7, 0);
            ((Telerik.WinControls.UI.TrackBarScaleContainerElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0))).Orientation = System.Windows.Forms.Orientation.Vertical;
            ((Telerik.WinControls.UI.TrackBarScaleElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2))).Orientation = System.Windows.Forms.Orientation.Vertical;
            ((Telerik.WinControls.UI.TrackBarScaleElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2))).StretchVertically = false;
            ((Telerik.WinControls.UI.TrackBarLabelContainerElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2).GetChildAt(1))).StretchVertically = false;
            ((Telerik.WinControls.UI.TrackBarLabelElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2).GetChildAt(1).GetChildAt(0))).Text = "Lo";
            ((Telerik.WinControls.UI.TrackBarLabelElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2).GetChildAt(1).GetChildAt(1))).Text = "Hi";
            // 
            // Form2
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(822, 515);
            this.Controls.Add(this.radTrackBar1);
            this.Name = "Form2";
            this.Text = "Form2";
            ((System.ComponentModel.ISupportInitialize)(this.radTrackBar1)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private Telerik.WinControls.UI.RadTrackBar radTrackBar1;
    }

Workaround: remove setting of the text from the designer file to the Shown event of the form
public partial class Form2 : Form
{
    public Form2()
    {
        InitializeComponent();
    }

    protected override void OnShown(EventArgs e)
    {
        base.OnShown(e);

        ((Telerik.WinControls.UI.TrackBarLabelElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2).GetChildAt(1).GetChildAt(0))).Text = "Lo";
        ((Telerik.WinControls.UI.TrackBarLabelElement)(this.radTrackBar1.GetChildAt(0).GetChildAt(1).GetChildAt(0).GetChildAt(2).GetChildAt(1).GetChildAt(1))).Text = "Hi";
    }
}

To reproduce:
- Add RadTrackbar to a form and set its minimum and maximum to negative values.
- Start the application, the maximum is reset to 1.

Workaround:
Set the maximum at runtime. 

To reproduce:

radTrackBar1.SmallTickFrequency = 10;
radTrackBar1.TickStyle = TickStyles.None;
radTrackBar1.SnapMode = TrackBarSnapModes.None;

The user is not allowed to move the slider at all. If you set the Minimum property to 0 and the Maximum to 100, you will be able to slide to the right a little bit.

Workaround: use TickStyles.Both

#1 Scenario: Drag and drop the RadTrackbar to form. Set the Orientation to Vertical. Run the project and you will see that control is not visible
public Form1()
{
    InitializeComponent();
    this.radTrackBar1.Orientation = Orientation.Vertical;
}





#2 Scenario:  Drag and drop the RadTrackbar to form. Set the Orientation to Vertical. Run the project and you will see that control is cut off
private void Form1_Load(object sender, EventArgs e)
{
    this.radTrackBar1.Orientation = Orientation.Vertical;
}

Workaround:
Set the styles for the WaitingBarSeparator in Visual Style Builder (you can see how this is set for the other themes).

To Reproduce:

Add a RadDropDownButton on a form, then create a RadMenuItem and a RadTrackBarElement element. Add the trackbar to the children`s collection of the menu item, then add the menu item to the items`s collection of the RadDropDownButton element. Application freezes when you move the drag ball and it gets close to the end of the trackbar.

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        RadTrackBarElement trackBar = new RadTrackBarElement();
        //trackBar.StretchHorizontally = false;

        RadMenuItem menuItemTrackBar = new RadMenuItem();
        menuItemTrackBar.Children.Add(trackBar);
        this.radDropDownButton1.Items.Add(menuItemTrackBar);
    }
}

Workaround:

Set StretchHorizontally property of the trackbar to False.

trackBar.StretchHorizontally = false;

RadTrackBar - the scroll event is throwing when value is changed through code.

Workaround: Use flag to distinct whether the value was changed interactively or programmatically.

1.Add a UserControl.
2.Drag a TableLayoutPanel from the Toolbox and drop it onto the UserControl. Set its Dock property to Fill.
3.Add 3 columns to the TableLayoutPanel:
	Column1 50%
	Column2 20%
	Column3 30%
4.Add 3 rows to the TableLayoutPanel:
	Row1 Absolute 20
	Row2 Percent 100%
	Row3 Absolute 30
5.Add a RadTrackBar to the second row in the TableLayoutPanel and set its Dock property to Fill. Change the ColumnSpan property to 3.
6.Set the RadTrackBar.AutoSize property to false.
7.Open the designer and resize the user control on a way to make its size very small. As a result Visual Studio hangs.

If you set the Office2010Silver theme to RadProgressBar and set the BackColors of the UpperIndicator through the Edit UI Elements dialog, you will notice that your colors are not shown and you still get the colors defined by the theme. It seems that this behavior is determined by the DrawFill property of the UpperIndicator which is false. This is interesting, because if DrawFill is false, the UpperIndicator should not be visible at all.
This behavior is due to the fact that in Office2010 themes the UpperIndicator fill is ImageShape and not a gradient fill.

Set Maximum and Value of RadTrackBar to 100. When you run the application, the thumb will be at the wrong position.

When RadTrackBar is resized at runtime, the position of the thumb is not changed.

RadProgressBar IndicatorElement1 and IndicatorElement2 have two missing pixels on the top right corner with ControlDefault and Breeze themes.

Workaround:
Set a -1 top margin to both elements - IndicatorElement1 /IndicatorElement2

Fix. RadTrackBar - TrackBarIndicatorElement does not resize correctly, when RadTrackBar is resizing in run time and Maximum value of RadTrackBar is set to 2000. Steps to reproduce: 1. Use this code: this.radTrackBar1.LargeTickFrequency = 200; this.radTrackBar1.SmallTickFrequency = 25; this.radTrackBar1.Maximum = 2000F; 2. Resize the RadTrackBar in run time when thumb is at max value.