Excel column/row headers are not displayed in braille

At least in Excel 2016 and 2013.

STR:
* Open an empty sheet.
* Type 'Foo' in A1 and 'Bar' in B1.
* Select A1 through B2.
* Press Ctrl+L to create a new table and check the box to indicate the table contains headers.
* Go to B1. The header text is not displayed.
* Go to A1 and press NVDA+Shift+C to mark the start of the headers.
* Go back to B1. The header is still not displayed.