Steps to reproduce (demo):
- Define the mask in markup. Example:
- Initialize using kendo.init()
Textbox shows prompt chars on focus, only allows characters defined in mask, etc.
Textobx does not show prompt chars on focus (or shows "undefined" if data-clear-prompt-char is set to true), allows any characters.
The issue does not happen if a) there is a literal in the mask, or b) the component is initialized through JS, such as $(selector).kendoMaskedTextBox(options).