Mappings for body and html don't seem to match reality #330
Description
Load the following test case in macOS, Windows, or Linux:
<html>
<head><title>HTML Title</title></head>
<body aria-label="ARIA label on body">
<div>Hello world</div>
</body>
</html>
And then load the accessible inspector of your choice for that platform to compare the tree with the mappings for body (which are documenty) and html (not mapped).
TL;DR: Everyone is essentially exposing html as the document (i.e. it's mapped). Most are exposing body as a generic child thereof -- except Firefox which is pruning it (causing the author's aria-label to be discarded).
Linux results
Chrome
[document web] name='HTML Title'
++[section] name='ARIA label on body' tag:body
++++[section] tag:div
Firefox
[document web] name='HTML Title' tag:body
++[section] name='' tag:div
Epiphany (WebKitGtk)
[document web] name='HTML Title'
++[panel] name='ARIA label on body' tag:body
++++[section] tag:div
Windows results
Chrome
ROLE_SYSTEM_DOCUMENT name='HTML Title'
++IA2_ROLE_SECTION name='ARIA label on body'
++++IA2_ROLE_SECTION parent='ROLE_SYSTEM_GROUPING'
Firefox
ROLE_SYSTEM_DOCUMENT name='HTML Title'
++IA2_ROLE_SECTION parent='ROLE_SYSTEM_GROUPING'
Edge
document 'HTML Title`
++ group `ARIA label on body'
Mac results
Safari and Chrome
HTML Title (HTML content)
++ ARIA label on body (group)
++++ <empty description> (group)