Cornerstone Off Canvas — aria-hidden-focus accessibility issue

[Giuligiuli]

Subject: Cornerstone Off Canvas — aria-hidden-focus accessibility issue

Hello Themeco Team,

We’re experiencing an accessibility issue with the Cornerstone Off Canvas element on our website.

When the panel is closed, Cornerstone applies aria-hidden="true" , but the interactive elements inside remain focusable. This causes Lighthouse to report an aria-hidden-focus accessibility failure.

We also encounter the browser console warning:

Blocked aria-hidden on an element because its descendant retained focus.

Our affected panel contains a WPForms contact form.

We found a similar issue reported here:

Aria-hidden js console error for off-canvas mobile menus

The off-canvas mobile menu gives a js error upon closing it via the close button. Here is the output in console Blocked aria-hidden on an element because its descendant retained focus. The focus must not be hidden from assistive technology users. Avoid using aria-hidden on a focused element or its ancestor. Consider using the inert attribute instead, which will also prevent focus. For more details, see the aria-hidden section of the WAI-ARIA specification at https://w3c.github.io/aria/#aria-hid…

Could you please confirm whether this is a known issue and whether there’s a native Cornerstone setting or an official fix to ensure that closed Off Canvas panels are not keyboard-focusable and focus is correctly restored to the trigger?

Thank you!