Last Updated: 12 Jul 2021 07:37 by ADMIN
Release R3 2021 (LIB 2021.2.712)
Created on: 10 Jun 2021 19:42
Category: TextBoxControl
Type: Bug Report
RadTextBoxControl: new character is not insert at the correct position

Start with "870-801" (no quotes) in the RadTextBoxControl

Backspace to delete the '8' after the hyphen
With the caret index directly after the hyphen, enter a new character.
This will result in the newly added character being appended to the end of the text instead of at the caret index.

Please note: If the caret index is moved manually after deleting the "8", the new character will be inserted at the caret index as expected.


I have attached a sample project that replicates the issue. We are on the latest Telerik WinForms controls. (2021.2.511)

Attached Files:
1 comment
Nadya | Tech Support Engineer
Posted on: 11 Jun 2021 08:56

Hello, Luke,

The provided project is greatly appreciated. After following the exact steps I was able to reproduce the undesired behavior in RadTextBoxControl with the latest version. 

This is why I converted this forum thread into a bug report in our feedback portal. You can track its progress, subscribe for status changes and add your comments on the following link - feedback item. Please make sure that you follow this item in order to get notified when its status has changed. I have also updated your Telerik Points

I hope this information is useful. If you have any other questions do not hesitate to contact me.

Progress Telerik

Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at