Issue #2987208 by akalata, alexpott, sime, tim.plunkett, Charlie ChX Negyesi: ElementInfoManager does not provide an alter hook, cannot alter element plugin definitions

Issue #3067943 by andypost, jhodgdon, Amber Himes Matz, pwolanin: Add capability for search blocks on non-default search

Issue #3070620 by idebr, Lendude: RSS <channel><link> element must refer to the website URL instead of the request URL

Issue #3039490 by shashikant_chauhan, joachim: ConditionInterface::notExists() and ConditionInterface::exists() have the same docs

Issue #3068971 by christinlepson, joachim: error in param docs for UserCreationTrait::grantPermissions()

Issue #2371593 by mikelutz, larowlan, madhavvyas, Mile23, andypost, bertramakers, Berdir: Properly deprecate ForumManagerInterface::getParents()

Issue #2994748 by jhodgdon, andypost, Amber Himes Matz: Make a way for Help Page Sections to be ordered

Issue #3021718 by andypost, glu2006, mikelutz, voleger, alexpott: Properly deprecate menu_local_tabs(), menu_secondary_local_tasks(), menu_primary_local_tasks()

Issue #3069415 by bomoko, mikelutz, voleger: Call to deprecated method getSource() of class Drupal\twig_loader_test\Loader\TestLoader in core/modules/system/tests/modules/twig_loader_test/src/Loader/TestLoader.php on line 17

Revert "Issue #3069415 by bomoko, voleger: Call to deprecated method getSource() of class Drupal\twig_loader_test\Loader\TestLoader in core/modules/system/tests/modules/twig_loader_test/src/Loader/TestLoader.php on line 17"

This reverts commit dabe7a91.

Issue #3069415 by bomoko, voleger: Call to deprecated method getSource() of class Drupal\twig_loader_test\Loader\TestLoader in core/modules/system/tests/modules/twig_loader_test/src/Loader/TestLoader.php on line 17

Issue #3069057 by voleger, mikelutz: Fix Class extends deprecated class PHPUnit\Framework\BaseTestListener in core/tests/Drupal/Tests/Listeners/DrupalListener.php on line 21

Issue #3069043 by mikelutz: Trigger an error on direct access of ContentEntityStorageBase::doLoadMultipleRevisionFieldItems() and mark it to be set abstract in Drupal 9

Issue #3070369 by lauriii, zrpnr, bnjmnm: Remove Drupal\views_ui\ViewEditForm::form dependency to jQuery UI tabs

Issue #2849745 by voleger, yogeshmpawar, gaurav.kapoor, Berdir, Munavijayalakshmi, vacho, cilefen, daffie: Replace documentation recommending db_*() wrappers

Issue #3039026 by kim.pepper, Berdir, Peter Majmesku, vadim.hirbu, YurkinPark, andypost, dww, claudiu.cristea, alexpott, jibran, dawehner, mikelutz: Deprecate file_directory_temp() and move to FileSystem service

Issue #3067768 by Mixologic, greg.1.anderson, alexpott, Krzysztof Domański, Mile23: Random test fail in ManageGitIgnoreTest

Issue #3060070 by Krzysztof Domański: Add dataProvider for \Drupal\Tests\Core\Block\BlockBaseTest::testGetMachineNameSuggestion

Issue #3069028 by alexpott: Properly Deprecate Drupal\Core\Access\AccessResult::cacheUntilConfigurationChanges

Issue #3047801 by Eduardo Morales, mikelutz, pguillard, nlisgo, sathish.redcrackle, Berdir: Replace all calls to the deprecated Drupal::l() function in Core

Issue #3035312 by kim.pepper, andypost, martin107, yogeshmpawar, naveenvalecha, pguillard, Berdir, dww, claudiu.cristea, jibran, Mile23: Move file_scan_directory() to file_system service

Issue #3066439 follow-up by alexpott: Stop invoking pre-save methods in EntityStorageInterface::restore()

Issue #3069033 by mikelutz, Berdir: Properly deprecate Node::setRevisionAuthorId and Node::getRevisionAuthor

Issue #3058498 by fconnolly, yogeshmpawar, init90, leolando.tan, Berdir: Deprecate/Remove Apcu4Backend

Issue #3066439 by alexpott, amateescu, Charlie ChX Negyesi, catch, casey, Berdir, daniel.bosen: Stop invoking pre-save methods in EntityStorageInterface::restore()

Issue #2780475 by alexpott, Jo Fitzgerald, mpdonadio, dawehner: assertEscaped() and assertUnescaped don't work as you would expect in JavascriptTestBase

Issue #3067584 by idebr, mondrake, Niklan, andypost, catch, alexpott: Pager template renders attributes that do not exist

Issue #2912237 by karthikkumarbodu, smagdits, gawaksh, init90, karimei, vacho, andypost, shubham.prakash, mmbk, cilefen, tatarbj, borisson_, Lendude: Remove calls to deprecated method assertEqual from Config tests

Revert "Issue #3067584 by idebr, Niklan, andypost: Pager template renders attributes that do not exist"

This reverts commit 087e020d.