1. Create new project and add RadTextBox inside a user control. 2. Set its Dock property to Left. 3. Add custom button items in its layout by using RadButtonElement and StackLayoutElement. 4. Set a default value to the text box when handling the form Load event. 5. Run the project.
Hello,
The reported behavior cannot be reproduced with the latest Q3 2026 (2026.812.48) version of the Telerik UI for WinForms.
This is why I will close this item and set its status to "Declined" on our feedback portal. Please upgrade to the latest version to take advantage of the improvements in the Telerik UI for WinForms components.
If you have any other questions or concerns, please do not hesitate to contact me.
Regards,
Dinko | Tech Support Engineer
Progress Telerik