bug: AXE: Elements must use only allowed ARIA attributes for ion-select

[kensodemann]

Bug Report

Ionic version:

[ ] 4.x
[x] 5.x

Current behavior:
Axe issue - Elements must use only allowed ARIA attributes for ionselect.

Running AXE on the app linked below I get the following for ion-select:

Fix the following:
ARIA attribute is not allowed: aria-required="true"

Expected behavior:
Would be able to use aria-required on an ion-select without the AXE error.

Related code:

https://github.com/ionic-afl/ionic-v5-observations.git

[ionitron-bot]

Thanks for the issue! This issue has been labeled as holiday triage. With the winter holidays quickly approaching, much of the Ionic Team will soon be taking time off. During this time, issue triaging and PR review will be delayed until the team begins to return. After this period, we will work to ensure that all new issues are properly triaged and that new PRs are reviewed.

In the meantime, please read our Winter Holiday Triage Guide for information on how to ensure that your issue is triaged correctly.

Thank you!

[kensodemann]

Discussing with the user, this also results in them not being able to mark the select required in a way that will be properly picked up by a screen reader.

[kensodemann]

There are issues with the HTML specification itself. aria-required is not something that is allowed, and the spec for custom elements does not allow for a "required" attribute. Thus there is currently no way within the HTML specs to support this.