Issue #3028656 by Berdir, martin107: Add @trigger_error() to deprecated EntityManager listener methods

Issue #3023981 by Berdir, larowlan, alexpott, xjm, catch: Add @trigger_error() to deprecated EntityManager->EntityRepository methods

Issue #2926508 by Wim Leers, mpdonadio, joelstein, tacituseu, jhedstrom, effulgentsia, tedbow, mradcliffe, borisson_, dawehner, larowlan: Add DateTimeNormalizer+TimestampNormalizer, deprecate TimestampItemNormalizer: @DataType-level normalizers are reusable by JSON:API

Issue #3033404 by phenaproxima, seanB: Views DisplayLink area plugin tries to use non-existent theme hook

Issue #3026698 by tim.plunkett, Kristen Pol, xjm, tedbow: Allow section storage to provide a more granular ID for tempstore

Issue #3032869 by alexpott, tim.plunkett, dww, tacituseu, Mixologic: \Drupal\Core\Update\UpdateKernel::fixSerializedExtensionObjects() caused test runs to double in duration

Issue #3031756 by idebr, TMWagner, joachim: core/lib/Drupal/Core/Entity/entity.api.php references deprecated \Drupal::entityManager

Issue #3021654 by Mile23, kim.pepper, Berdir, andypost: Deprecate file_delete() and file_delete_multiple() in file.inc

Issue #3031580 by alexpott, Gábor Hojtsy, Lendude, catch, jibran, dawehner, Berdir: Undeprecate \Drupal\FunctionalTests\AssertLegacyTrait and \Drupal\KernelTests\AssertLegacyTrait in Drupal 8

Issue #3031775 by singhkiran, Chi: Cache backend classes reference non-existing functions cache_get() and cache_get_multiple()

Issue #3011079 by scott_euser, alexpott, Lendude: Convert \Drupal\system\Tests\Session\SessionHttpsTest to PHPUnit

Issue #3030501 by alexpott, Gábor Hojtsy, Berdir: [Symfony 4] Drupal\Core\StackMiddleware\ReverseProxyMiddleware calls Symfony\Component\HttpFoundation\Request::setTrustedHeaderName() which does not exist

Issue #3019333 by tim.plunkett, julenmelgar, Ismail Cherri: If you translate the literal "inline blocks" to another language in the layout builder, it stops working

Issue #3008927 by tim.plunkett, tedbow: The Layout Builder breadcrumbs for defaults don't lead to the view mode being edited

Issue #3004642 by amateescu, plach: Deprecate SqlContentEntityStorageSchemaConverter in favor of the new API provided by EntityTypeListenerInterface::onFieldableEntityTypeUpdate()

Issue #3031479 follow-up by amateescu, mondrake: Replaced numeric index names with regular names in the test coverage.

Issue #3031740 by alexpott, tmanhollan, catch, collinhaines: Updating to 8.6.8 or 8.6.9 with Drush 8 causes data loss via update_fix_compatibility()

Issue #2572605 by Gábor Hojtsy, slasher13, Jo Fitzgerald, alexpott, andypost, Cottser, skyredwang, mfernea, joelpittet, jibran, larowlan, aleevas, Wim Leers, lauriii, catch, Berdir: Make Drupal 8 optionally working with Twig 2, while keeping its dependency on Twig 1

Revert "Issue #3031577 by alexpott: \Drupal\Tests\Listeners\DeprecationListenerTrait::getSkippedDeprecations() does not work in unit tests"

This reverts commit c52175dd.

Issue #3031479 by amateescu, jibran, mondrake: TaxonomyVocabularyHierarchyUpdateTest::testTaxonomyUpdateParents() is prone to breaking on PostgreSQL

Issue #3032548 by Sam152: ContentModerationRouteSubscriber assumes all parameters in an entity form route contain a 'type' key

Issue #3031577 by alexpott: \Drupal\Tests\Listeners\DeprecationListenerTrait::getSkippedDeprecations() does not work in unit tests

Issue #3004536 by tim.plunkett, tedbow, Sam152, phenaproxima, mark_fullmer: Move the Layout Builder UI into an entity form for better integration with other content authoring modules and core features

Issue #2986325 by arpad.rozsa, sleitner, Berdir, plach, timcosgrove: Browser language detection broken as soon as a request with no Accept-Language header happens

Issue #2964777 by tim.plunkett, tedbow: Method comment for \Drupal\layout_builder\Plugin\SectionStorage\DefaultsSectionStorage::getDisplay is wrong

Issue #2960795 by shaal, HOG, eleleka, mikael_ek, kjay, samsone, kawo, andrewmacpherson, Gábor Hojtsy, melinda_ksz, mgifford, lauriii, jollysolutions, alexpott, brucedarby, andypost: Text fails contrast in banner

Issue #3023729 by tim.plunkett, bkosborne: LayoutBuilderController should iterate over components in a region using Element::children()

Issue #3025865 by quietone, xurizaemon, mikelutz: i18ntaxonomy should be an array in d6 VocabularyPerType source plugin

Issue #3030781 by shaal, mcannon, andrewmacpherson, Gábor Hojtsy: Umami - icon misaligned on warning and error messages

Issue #3027236 by rachel_norfolk, kjay, tonypaulbarker, akshay_d, shaal, Eli-T, Not Real, babusaheb.vikas: Umami - hero block is identical on Home and Recipe pages, so potentially confusing

Issue #3020716 by seanB, lauriii, phenaproxima, Gábor Hojtsy, dww, andrewmacpherson, alexpott, larowlan, xjm, benjifisher: Add vertical tabs style menu to media library

Issue #2754493 by quietone, mikelutz, vacho, vasi, masipila: D6 synchronized field settings aren't migrated properly

Issue #1883744 by hchonov, tim.plunkett, borisson_, xjm, tstoeckler, joachim: Convert Entity to EntityBase for consistency with ContentEntityBase and ConfigEntityBase

Issue #3028301 by tedbow, tim.plunkett, Wim Leers, xjm: Do not expose to Layout Builder's sections either in defaults or overrides to REST and other external APIs

Issue #3031302 by alexpott, Wim Leers: \Drupal\system\EventSubscriber\ConfigCacheTag is trying to clear render cache for THEME_NAME.settings changes but it does not work

Issue #3026264 by Wim Leers, cspitzlay: UserAccessControlHandler::checkFieldAccess() denies access to mail field without varying by the ‘user’ cache context

Issue #2215857 followup by gaydamaka, timmillwood, alexpott, lauriii: Regression on Internet Explorer 11