Multiselect dropdown FastPass errors: elements with an Aria role that require children contain them, elements with an Aria role that require parent roles are contained by them

[caratyler]

• Package version(s): 8.37.0 and 7.177.2
• Browser and OS versions: (fill this out if relevant)
• Note - I see several other dropdown accessibility issues but not this exact one -- e.g, 19518

Describe the issue:

1. Activate the example for
   v7: Multi-select uncontrolled example here:
   https://fabricweb.z5.web.core.windows.net/oufr/7.177.2/#/examples/dropdown
   v8: Multi-select uncontrolled example here:
   https://fabricweb.z5.web.core.windows.net/oufr/8.37.0/#/examples/dropdown
2. Run Fast Pass

Actual behavior:

Accessibility insights is failing with the following errors:

• Certain ARIA roles must contain particular children
• Certain ARIA roles must be contained by particular parents>

Expected behavior:

Fast pass passes

If applicable, please provide a codepen repro:

v7: Multi-select uncontrolled/controlled example here:
https://fabricweb.z5.web.core.windows.net/oufr/7.177.2/#/examples/dropdown
v8: Multi-select uncontrolled/controlled example here:
https://fabricweb.z5.web.core.windows.net/oufr/8.37.0/#/examples/dropdown

Priorities and help requested (not applicable if asking question):

We are on v7 of Fluent so we are hoping to see a fix there, not just in v8

Are you willing to submit a PR to fix? (Yes, No)
Yes, or help cherry pick the fix back to v7 if necessary

Requested priority: (Blocking, High, Normal, Low)
High - Blocking grade C which is required for release in our organization

Products/sites affected: (if applicable)

[gouttierre]

@caratyler - Thanks for filing this issue with us. To set expectations the developers will review this issue once capacity allows.

@khmakoto - Would you be able to confirm if this is a regression, or if this behavior is an issue?
cc @smhigley - I am looping you in as you are working with Dropdown convergence.

[smhigley]

This is an error with the automated testing ruleset, and fixed in axe-core v4.3.4: https://github.com/dequelabs/axe-core/releases/tag/v4.3.4

Accessibility Insights is still on 4.3.2.

[smhigley]

(the issue was with recognizing group as a valid child of listbox)