Hello Jair ,
Thank you for this report. This is a known issue in the
RadMaskedTextBox control. It logged in our
PITS where you can track its progress.
In the meantime it is best to take advantage of the new
MaskedInput controls. They are developed to overcome the known issues and limitations of the
MaskedTextBox control as well as to further enhance the user's experience when entering controlled input. You can find detailed information about each control from the suite in our
online documentation.
All the best,
Tina Stancheva
the Telerik team
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