Dropdown: aria-expanded attribute not present.

[WTW-Steve-Martin]

Describe the bug

The Axe Dev Tools for Accessibility is reporting that the 'Required ARIA attributes must be provided'.

The aria-expanded attribute is set on an element to indicate if a control is expanded or collapsed, and whether or not the controlled elements are displayed or hidden.

An appropriate attribute is required.

Environment

Windows 10

Reproducer

No response

Angular version

17.2.1

PrimeNG version

17.7.0

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.18.0

Browser(s)

Chrome and Edge

Steps to reproduce the behavior

1. Install the Axe Dev Tools for Accessibility plug-in.
2. Visit the PrimeNG dropdown page (https://primeng.org/dropdown) on Chrome/Edge browser.
3. Scan the page with Axe

Expected behavior

No response

[TaneliTuomola]

Same issue with TreeSelect and Calendar: #14358

[cetincakiroglu]

Hi,

Huge thanks for reporting the issue and raising other issues, this issue is a duplicate of #14832 and it's fixed already. Closing this one.