Chrome Bad: 67.0.3362.0 (Official Build) canary (64-bit) (cohort: Clang-64)
Chrome Good: 65.0.3325.106 (Official Build) beta (64-bit) (cohort: Beta)
Firefox: 52 ESR
NVDA: 2017.4

Steps to repro:
# With NVDA running, visit inbox.google.com
# Focus the application and press insert+space to turn focus mode on
# Press 'j' several times to move through messages
# Press 'k' several times to navigate back to the top of the inbox
# Notice that in the 'bad' version of Chrome, what is announced is not what has focus most of the time
# Notice in the 'good' version of Chrome, messages that are focused are read each time

Expected: Messages that receive focus should be announced

Actual: Often times the message losing focus is announced instead
Firefox: Works as expected