nonPUAContentInSameTextElement failure possibly too aggressive

[lunelson]

Summary

I am encountering the nonPUAContentInSameTextElement failure on content inserted via the CSS content rule in a ::before pseudo-element, which should be innocuous: for example CSS counters created with the counter() function, and on a zero-width space used to "fix" a Safari accessbility bug, where Safari does not report list semantics to AT when list-style: none is applied (see https://www.scottohara.me/blog/2019/01/12/lists-and-safari.html)

The toolkit's suggestion that I should apply these characters in a span with aria-hidden="true" is not possible in this case, as this is raw HTML text content received from a CMS; nor would it be the correct way anyway, of applying css-counters for example.

Expected result

Characters such as a zero-width space or a css counter should not cause a failure.

Actual result

Failure

Test Case

The following codepen shows both techniques:

https://codepen.io/lunelson/full/abzRZYo

Additional Information

ARC Toolkit version

3.3.2.0

Operating System and version

macOS 10.15.2

Browser and version:

Chrome Version 79.0.3945.117 (Official Build) (64-bit)