Google Chrome 65.0.3322.3 (Official Build) canary (64-bit) (cohort: Clang-64)
Windows 10 Enterprise Version 1607 Build 14393.2007
NVDA 2017.4
JAWS 2018.1801.18 Private Beta 
Firefox ESR 52.5.3 (64-bit)

# Launch JAWS 
# Open Sheets with end-user account
# Open blank Sheet 
# Navigate the edit region around cells
Expected: cell address read
Actual: 
For blank cells, nothing is read
For cells with content, the column name and then the entire row up to that point is read. For example, make a sheet with row one, Column A - apple in Column A, row 1 column B - pear, and row 1 Column C - pineapple.
If the focus is on row 1 column C, it says the following: 
Column C
applepearpineapple

# Close JAWS, open NVDA, use same example sheet
# Put focus on row 1 column C
Column name and Row number not read at all
NVDA says the following even though the cell is not blank:
blank
pineapple selected
apple unselected
Working... 

# Compare to Firefox ESR with JAWS:
selected
pineapple
Column 3
Edit 
____

Originally reported internally in b/69840944
Original repro: 
Windows 8.1
Chrome: 63.0.3239.59 beta (64 bit)
JAWS: 18.0.4321
Steps Performed:
a. Open sheets and navigate in the edit region.

Actual Result:
Screen Reader announces read only while navigating in the edit region.

Expected Result:
Screen Reader should announce cell address.