Checkbox changes value on Device Rotation

[reverse-unina]

When I perform this sequence of events:

1.    Click on Urgent Calls
   

2.    Click on Enable Urgent Calls
   

3.    Click on Call Filter
   

4.    Click on Prefixes
   

5.    Press on Menu Button
   

6.    Click on New item
   

7.    Click on OK
   

8.    Click on Back Button
   

9.    Click on Prefixes
   

10.  Check the checkbox
    

11.  Orientation Change
    

The checked box becomes unchecked.