jqxMaskedInput not removing changing value on 'Delete' key press

[Svetoslavb04]

Describe the bug When trying to edit the input with the 'Delete' key the value is not changing only the cursor position is changing

To Reproduce Steps to reproduce the behaviour:

1. Go to https://www.jqwidgets.com/jquery-widgets-demo/demos/jqxmaskedinput/index.htm#demos/jqxmaskedinput/defaultfunctionality.htm
2. Click on any input
3. Enter some digits
4. Try to edit them with the 'Delete' key
5. See an error

Expected behaviour On the 'Delete' key click the input should be changed. The character from the right should be deleted