Chrome Version       : 64.0.3282.167
OS Version: 10176.72.0
URLs (if applicable) : https://jsfiddle.net/b0on048d/7/

What steps will reproduce the problem?
1. Enable ChromeVox and tab through the cells in the bottom right of this JSFiddle: https://jsfiddle.net/b0on048d/7/
2. Notice that the location is read for the column headers: "Header 3, Row 1 Column 4", as well as the grid cells: "Cell 1: Row 2 Column 2"
3. Now tab onto one of the row headers, e.g. Label 1.

What is the expected result?
I think it should read the location of the row headers the same as other cells, i.e. "Label 1, Row 2 Column 1"

What happens instead of that?
No location is read for the row headers, it just says "Label 1, Selected"

UserAgentString: Mozilla/5.0 (X11; CrOS x86_64 10176.72.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36