Chrome Version: (copy from chrome://version)
OS: (all)

The HTML Accessibility API Mappings 1.0 defines different roles for the section element depending on the presence of an accessible name:

with accessible name role=region
https://w3c.github.io/html-aam/#el-section
http://w3c.github.io/aria/core-aam/core-aam.html#role-map-region
without, does not = region
http://w3c.github.io/aria/core-aam/core-aam.html#role-map-region-nameless

suggest chrome align implementation with spec.

test case which includes named and un-named section element: https://s.codepen.io/stevef/debug/JyvZLN