Chrome: 66.0.3350.0 Canary
Firefox 52 ESR
NVDA 2017.4
JAWS 2018

Steps to repro
# Open a document
# Type 'hambrger'
# With NVDA or JAWS running, choose spellcheck from the menu
# Notice that the dialog is navigable with tab
# Press change
# A dialog appears 'no more suggestions'

Expected: In Chrome, the focus should be on this dialog's close button
Actual: Focus appears on the close button in Firefox, but not Chrome