Accessibility issue with links listing blocks.

[Hug0-Drelon]

Description

Blocks listing links aren't wrapped in a <nav> leading to accessibility issue.
Although it has been done for old fashioned widget, see https://make.wordpress.org/core/2020/07/09/accessibility-improvements-to-widgets-outputting-lists-of-links-in-5-5/

Concerned blocks I found are:

• core/page-list
• core/categories
• core/tag-cloud

core/posts-list might be concerned in some cases.

Step-by-step reproduction instructions

Add one of the mentioned block in a post and see there is no <nav> on frontend.

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

[carolinan]

Hi @Hug0-Drelon
Can you explain in more detail what the accessibility issue is, and perhaps include some references to the WCAG?

The block does not know what context it is used in, only the person placing the blocks would know that, so it may not be appropriate to use the nav element for these blocks by default. The page list is also able to be placed inside the navigation block, so it should not have two nav elements, it would need to be conditional.