Issue #3267721 by nod_, Wim Leers: Add DrupalCI step for ensuring that CKEditor 5 build files are build correctly

Issue #3261248 by paulocs, andregp, andypost, longwave, quietone: Remove deprecated user.module functions

Issue #3268174 by Wim Leers, nod_, catch, lauriii: Bug in CKE 4 → 5 upgrade path "format" does not always map to "heading", it could map to "codeBlock" too, or both, or neither

Issue #3077703 by longwave, catch, xjm: Remove pre-8.7.7 core compatibility checks in extension parsing

Issue #3267274 by quietone, xjm, danflanagan8: Use aggregator fixture instead of migrate_drupal fixture in d6/MigrateBlockTest

Issue #3162228 by longwave, Spokje, freelock, jackson.cooper, phenaproxima, xjm: Composer 2 Fatal error Call to undefined method Composer\DependencyResolver\Operation\UpdateOperation::getJobType() in /home/mysite/public_html/core/lib/Drupal/Core/Composer/Composer.php:170

Issue #3265325 by xjm, Wim Leers, daffie: Raise a warning instead of an error when installing on MINIMUM_SUPPORTED_PHP

Issue #2911473 by Maouna, joachim, adinac, dhirendra.mishra, ravi.shankar, MaskOta, ranjith_kumar_k_u, kuldeep_mehra27, mahtab_alam, fabienly, carolpettirossi, joelpittet, jenlampton, dww: Selected yet disabled individual options from checkboxes element don't persist through save

Issue #3226716 by beatrizrodrigues, joachim, xjm, lucienchalom: Missing return value documentation for TranslatableInterface::addTranslation()

Issue #3256003 by andregp, ranjith_kumar_k_u, Satyajit1990, Gauravmahlawat, Kristen Pol: Olivero: tour module popup close button size issue

Issue #3252562 by rlhawk, mikelutz, benjifisher, danflanagan8: In Callback Migrate process, document how to use functions that accept no argument as callable

Issue #3268272 by sayco: TypeError: strpos(): Argument #1 ($haystack) must be of type string, int given in strpos()

Issue #3060875 by pavnish, Dakwamine, martin107, Neslee Canil Pinto, mikelutz, Berdir: ImageStyleStorage should extend ConfigEntityStorageInterface

Issue #3268368 by lauriii, xjm, Wim Leers: Robustify and restore \Drupal\Tests\ckeditor5\FunctionalJavascript\MediaLibraryTest::testButton

Issue #3041900 by ankithashetty, Krzysztof Domański, yogeshmpawar, longwave: The element selector type "CSS, XPath" in JSWebAssert should be lowercase

Issue #3267705 by xjm, longwave: Fix error message when 'yarn check -s' fails in the commit check script

Issue #3258782 by murilohp, quietone, dww, catch, Spokje, xjm, daffie, benjifisher, benjifisher, rkoller, AaronMcHale, andregp, Antoniya, ckrina, guilherme-rabelo, guilherme-rabelo, kimberlly_amaral, victoria-mar: Do not display obsolete modules at admin/modules

Issue #3090187 by ilya.no, andypost, AdamPS, abx: Mechanism to disable preprocessing of base fields in comment entity type so they can be configured via the field UI

Issue #3211131 by longwave, neclimdul, mondrake: Call to an undefined static method PHPUnit\Util\ErrorHandler::handleError() in DrupalStandardsListenerTrait

Issue #3267644 by danflanagan8, mglaman: Custom Block (block_content) tests should not rely on Classy