Steps to reproduce:

https://jsfiddle.net/gdaria/9kcy7fo3/15/

This is similar issue to #8557
When a list <ul> and heading <h4> are wrapped in a div with role=alert the list and the heading will not be read by NVDA.

  <div id="errorList" class="hidden" role="alert">
    <h4>
      Error List
    </h4>
    <ul>
      <li>Error 1</li>
      <li>Error 2</li>
      <li>Error 3</li>
    </ul>
  </div>

When a list is removed from the div the heading will be announced or when role=alert is added to <ul> the list will be announced.

    <ul id="errorList" class="hidden" role="alert">
      <li>Error 1</li>
      <li>Error 2</li>
      <li>Error 3</li>
    </ul>

Actual behavior:

When button is clicked NVDA only says "Alert" and it doesn't read a heading or a list.

Expected behavior:

When button is clicked NVDA should announce full alert message (heading + list)

NVDA logs, crash dumps and other attachments:

System configuration

NVDA installed/portable/running from source:

NVDA version:

NVDA Version 2023..1.0.27913

Windows version:

Windows 10 Enterprise Version 10.0.19045 Build 19045

Name and version of other software in use when reproducing the issue:

Microsoft Edge: Version 113.0.1774.57 (Official build) (64-bit)
Chrome Version 114.0.5735.110 (Official Build) (64-bit)

Firefox 113.0.2 (64-bit)

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Have you tried any other versions of NVDA? If so, please report their behaviors.

If NVDA add-ons are disabled, is your problem still occurring?

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?