WordPress 5.8 Compatibility: Primary issue

[jeherve]

WordPress 5.8 is set to release on July 20, 2021
https://make.wordpress.org/core/5-8/

We consequently need to ensure that Jetpack is fully compatible with this new release by Jetpack 9.9, scheduled to be released in early July.

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• Update our "tested up to" version (General: Basic updates to prepare for WP 5.8 #20040)
• Update the version of WordPress required for Jetpack from WP 5.6 to WP 5.7 (General: Basic updates to prepare for WP 5.8 #20040)
• Remove Instagram core compat code (see Embeds: Note when to remove our removal of Core Insta #19736, done via General: Basic updates to prepare for WP 5.8 #20040)
• Remove WP 5.6 backwards compatibility checks
• Photon: add WebP image format support (reference / Internal reference: p3topS-Tn-p2 ) / Core Dev Note
• Review codebase for all Photon usages that are limited to specific formats to include WebP once the above is done.
• Blocks: bundle not compatible with WP 5.8 Blocks: bundle not compatible with WP 5.8 #20089
• Ensure our blocks extending core blocks properly handle global settings that may disable blocks (reference)
• Remove usage of __experimentalBlock in favor of useBlockProps Remove the block wrapper component WordPress/gutenberg#31419 Blocks: switch away from __experimentalBlock to useBlockProps #18864
• Full Site Editing block compatibility Site Editor Compatibility: Tracking issue for remaining fixes for Jetpack block FSE support #19504
• Review Jetpack blocks in Widget Editor 275-gh-view-design
• Review legacy widgets in block widget editor
  • Search: Widget settings Search: Widget settings are not accessible in upcoming widget editor #20055
  • Milestone Widget Milestone Widget: PHP Notice in block widget management page #20208
• Widget Visibility with the new Block-based Widget Editor Widget Visibility: add controls to widget block editor #20057
• Update Unit Tests to detect new default install Re-enable Sync tests #20136
• Update Site Logo's as the format conflicts with Gutenberg's Site Logo block (FSE) (Site Logo: 5.8 Compat #20047)
• block_editor_settings deprecated in favor of block_editor_settings_all https://core.trac.wordpress.org/ticket/52920 WordPress 5.8 Compatibility: Add support for block_editor_settings_all #20201
• Full Site Editing Compatibility: Multiple Blocks - "This Block Has Encountered an Error..." Full Site Editing Compatibility: Multiple Blocks - "This Block Has Encountered an Error..." #20184
• Editor: solve conflict between Jetpack blocks' @wordpress/editor` dependencies and Block-based Widgets Editor Editor: solve conflict between Jetpack blocks' @wordpress/editor dependencies and Block-based Widgets Editor #20357

In addition to the above, we can follow the dev-notes that will drop here about the release:
https://make.wordpress.org/core/tag/dev-notes+5-8

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Internal references:

• p9dueE-2WM-p2
• 1192874419362946-as-1200393427368072

For reference: prior art for WordPress 5.7 compat: #18842

[anomiex]

• Photon: add WebP image format support (reference / Internal reference: p3topS-Tn-p2 )

Then possibly we should also go through looking for places that limit types to gif, jpg, and png and add webp. #19927 just added one, for example.

[jeherve]

Good call; I added a checkbox for that 👍

[simison]

Have you tested how Jetpack features work with the new Query block shipping in 5.8? Especially the follow/likes buttons in posts. More context at pbAok1-27g-p2#comment-4353

[jeherve]

Have you tested how Jetpack features work with the new Query block shipping in 5.8?

Likes and Sharing buttons will not appear when using the Query block to display a list of posts. The solution here will be for us to develop a sharing block and a Like block:

• Sharing Sharing: create a "Sharing Buttons" block #19694
• Likes Likes: create a Like button Block #19659

Related posts (also hooked into the_content) can be handed using the existing Related Posts block.

[kraftbj]

Are we going to wait until after 5.8 ships to drop 5.6 compat?

[jeherve]

@kraftbj I was thinking we would drop it on July 6 (so 2 weeks before the WP 5.8 release), like we did in the last time around for WP 5.7. That would mean that for 2 weeks, Jetpack would only support the current version of WordPress, but this seemed acceptable to me the last time around, and this time too. What do you think?

[kraftbj]

That sounds great to me!

[sdixon194]

Moving this to 9.9.1

[samiff]

Per internal p3topS-Tn-p2#comment-3720 WebP support is now active, but minimally the Photon code will need to be updated to take advantage.