Chrome 68.0.3440.134 (Official Build) (64-bit)
Firmware: Google_Eve.9584.151.0 
Chrome 69.0.3497.95 (Official Build) (64-bit)
Firmware: Google_Eve.9584.160.0 
Google Chrome	71.0.3567.0 (Official Build) dev (64-bit)
Firmware Version Google_Caroline.7820.384.0

Steps to repro:
# Enable ChromeVox with ctrl + alt + z
# Create any site from sites.google.com in the "new sites" format
# Put focus on the main default section such as "your page title:
# Linear navigate using search + right
Expected: ChromeVox moves to the next item in linear navigation order
Actual: deletes entire section

Does not reproduce in corp account on M71.