No, in my case it is not working.
Infact, recently I have found a workaround. It is a Z-Index issue and can be overcome by setting Z-index value by given below code:
Thanks for the reply.
I have written the code in jsfiddle for the test. You can access it at Export Issue
If you run it in Chrome and see output in console window, there will be no text for column Sub-Department, whereas other columns will be exported correctly.
Please note I am using dropdownlist (not Combobox) and observable array in my test case.
Thanks