Column headings with special emoticon cannot be added into "Columns to show" parameter

Summary,

The "Columns to show" does not accept Column name that contains emoticon.

Step to Replicate

1. Create a new page
2. Add a page Page Properties macro in the page
3. Add the following table in the Page Properties macro

   test1	value1
   test2	value2
   test3	value3

4. Add a label to the page (test)
5. Now add a Page Properties Report Macro
6. Edit the Page Properties Report Macro
   #Add the test1 , test2 and test3 into the Columns to show option

Expected Result:

The test1 , test2 ,test3 can be added into the Columns to show option

Observed Result:

Only the test3 can be added in to the Columns to show option