Cursor goes to the end of field when we delete/backspace numbers in the field

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Enter some numeric value say 54321, this gets converted to 54,321
2. Now place the cursor at number "4" and delete it
3. Cursor goes back to end of the field, rather than staying at the location 
where delete button was pressed

What is the expected output? What do you see instead?
Cursor should stay in the position where delete event was fired

What version of the product are you using? On what operating system?
Windows 7

Please provide any additional information below.

Original issue reported on code.google.com by manjeets...@gmail.com on 24 Feb 2012 at 5:15