Gutenberg: v12.3.x plugin upgrade

[gutenberg-plugin-upgrade-bot]

Previous upgrade: #59151
Release notes: v12.3.0, v12.3.1, v12.3.2

Install and activate

• Copy & install v12.3.0-rc.1 (D72331-code, D72333-code)
• Activate v12.3.0-rc.1 on edge (D72334-code)
• Copy & install v12.3.0 (D72547-code, D72549-code)
• Activate v12.3.0 on edge (D72550-code)
• Activate v12.3.0 on production (D72335-code)
• Request v12.3.0 AT upgrade (p9o2xV-1Lz-p2)
• Copy & install v12.3.2 (D72787-code, D72787-code)
• Activate v12.3.2 on edge (D72792-code)
• Activate v12.3.2 on production (D72793-code)
• Request v12.3.2 AT upgrade (p9o2xV-1LR-p2)

Testing

• v12.3.0 Desktop viewport E2E
• v12.3.0 Mobile viewport E2E
• v12.3.0 WPCOM core (D72335-code)
• v12.3.2 Desktop viewport E2E
• v12.3.2 Mobile viewport E2E
• v12.3.2 WPCOM core (D72793-code)

Publish internal announcements

• Slack: #team-calypso
• Slack: #wpcom-happy-announce
• P2: wpcomhappy

Wrap-up

• Clean up unused releases
• Add log entry to the Gutenberg Upgrade Log (pcoGjb-g-p2)
• Open a new issue for the next upgrade, transfer remaining tasks, close this issue.

Blockers 🤷‍♀️

Other Issues 🐛

• Headstart: compatibility issues with loading block based templates
  • Reported internally in: paYE8P-1nV-p2
  • Workaround by @creativecoder: D72778-code
  • Explanation for a possible definitive fix by @david-binda: paYE8P-1nV-p2#comment-1275
• Adding spacer block in 12.3.0 fails WordPress/gutenberg#37758
  • Duplicate of: Multiple themes: Spacer block crashes #59846
  • Potential fix: Spacer: Fix unit settings filter WordPress/gutenberg#37774
• Simple Sites Only: Unable to edit page/post that has no content #59805

Issues transferred from previous release(s)

• wpcom-block-editor-list-view event not being tracked anymore due to element change (button -> a).
  Fix in: [GB 12.2.x][wpcom-block-editor][tracking] Fix the wpcom-block-editor-list-view-select tracking event #59423
• Tracking tests failing on mobile are due to the masterbar’s nav-unification JS enhancements not being applied in the E2E env, more details here: p1640078157264700/1639600047.255600-slack-CBTN58FTJ. This isn’t a blocker for the release.
• Site Editor regression - Redo is no longer available
  • Reported in: Site Editor regression - Redo is no longer available. WordPress/gutenberg#37760
• Duotone filter does not work on front end for non FSE themes as of 12.1.0 WordPress/gutenberg#37598

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cc @Automattic/gutenberg-upgrades @Automattic/cylon @simison

[gutenberg-plugin-upgrade-bot]

Automated update:
Copy step for v12.3.0-rc.1 marked as complete

[gutenberg-plugin-upgrade-bot]

Automated update:
Installation of v12.3.0-rc.1 marked as complete

[gutenberg-plugin-upgrade-bot]

Automated update:

• v12.3.0-rc.1 activation on edge marked as complete.
• Release notes updated to v12.3.0-rc.1

[gutenberg-plugin-upgrade-bot]

Automated update:
Copy step for v12.3.0 marked as complete

[gutenberg-plugin-upgrade-bot]

Automated update:
Installation of v12.3.0 marked as complete

[gutenberg-plugin-upgrade-bot]

Automated update:

• v12.3.0 activation on edge marked as complete.
• Release notes updated to v12.3.0

[gutenberg-plugin-upgrade-bot]

Automated update:

• v12.3.0 activation on production marked as complete.
• Release notes updated to v12.3.0

[gutenberg-plugin-upgrade-bot]

Automated update:
Added tasks for v12.3.2

[gutenberg-plugin-upgrade-bot]

Automated update:
Copy step for v12.3.2 marked as complete

[gutenberg-plugin-upgrade-bot]

Automated update:
Installation of v12.3.2 marked as complete

[gutenberg-plugin-upgrade-bot]

Automated update:

• v12.3.2 activation on edge marked as complete.
• Release notes updated to v12.3.2

[gutenberg-plugin-upgrade-bot]

Automated update:

• v12.3.2 activation on production marked as complete.
• Release notes updated to v12.3.2

[fullofcaffeine]

Next one: #59840.