Issue #2863222 by dmsmidt, tedbow, drpal, tim.plunkett: Contextual Accessibility: Announcement broken after enabling editing mode a second time

Issue #2805993 by blazey, tom_ek, alexpott, Wim Leers, Lund, Virbius: Provide base class for actions that update a field on an entity

Issue #2883699 by prajaankit, ahmad.h.khalil, cilefen: hook_theme_suggestions_HOOK() is not clear enough about what should be returned

Issue #2884769 by tim.plunkett, larowlan, tedbow: \Drupal\Core\Block\BlockManager::getGroupedDefinitions() triggers a notice on every call

Revert "Issue #2795489 by mpdonadio, gambry, Yogesh Pawar, cilefen, Munavijayalakshmi, wturrell, jhedstrom, pjohn, catch, xjm, ednawig: 2038 bug with PHP timestamps on 32-bit systems - warn users?"

This reverts commit fdc9ff9f.

Issue #2867304 by maxocub, michielnugter, Jo Fitzgerald, dawehner, quietone: Convert web tests to browser tests for migrate_drupal_ui module

Issue #2835586 by Grayside, heddn, tjh: Allow customization of stub rows from Migration process plugin

Issue #2843783 by vaplas, Wim Leers, tedbow: EntityResource: Provide comprehensive test coverage for Menu entity

Revert "Issue #2869568 by Berdir, dagmar, tstoeckler: Upgrade path: Clean up deleted revisions from {node_field_revision}"

This reverts commit 9a16601a.

Issue #2872151 by Lendude, phenaproxima, dawehner: Database/DrupalKernel: Convert system functional tests to PHPUnit

Issue #2843772 by Wim Leers, arshadcn: EntityResource: Provide comprehensive test coverage for DateFormat entity

Issue #2795489 by mpdonadio, gambry, Yogesh Pawar, cilefen, Munavijayalakshmi, wturrell, jhedstrom, pjohn, catch, xjm, ednawig: 2038 bug with PHP timestamps on 32-bit systems - warn users?

Issue #2843768 by Wim Leers, arshadcn, himanshu-dixit, yoroy: EntityResource: Provide comprehensive test coverage for Tour entity

Issue #2869568 by Berdir, dagmar, tstoeckler: Upgrade path: Clean up deleted revisions from {node_field_revision}

Issue #2346019 by amateescu, tstoeckler, jibran, plach, Berdir, larowlan: Handle initial values when creating a new field storage definition

Issue #2883646 by shashikant_chauhan, Dinesh18: Fix incorrect mention of getBaseInfo() on BaseFormIdInterface to getBuildInfo()

Issue #2884223 by kiamlaluno, Dinesh18: In \Drupal\Core\State\State, parent::delete($key) is called twice

Issue #2831936 by marcoscano, seanB, chr.fritsch, l0ke, Wim Leers, vijaycs85, phenaproxima, pguillard, johndevman, drubb: Add "File" MediaSource plugin

Issue #2486019 by mpdonadio, pfrenssen, webflo, michielnugter, maris.abols, ivanjaros, hauruck, MickeA, Jo Fitzgerald, mian3010, iMiksu: Wrong validation messages in Datelist::validateDatelist()

Issue #2747167 by michielnugter, dawehner, Lendude, mglaman, Mac_Weber, Jo Fitzgerald, klausi: Convert first part of web tests of views_ui

Issue #2828912 by tedbow, RajeevK, tim.plunkett, a-fro: Offcanvas width is not reset if tray is open with different width and not closed

Issue #2854111 by abbym, pritish.kumar, mahalingam_cs, trong.nguyen.tcec, Manuel Garcia, Cottser: Large images are not responsive, exceed the available space

Issue #2846554 by Berdir, tedbow, amateescu, dawehner, himanshu-dixit, Wim Leers, badrange, damiankloip, catch: Make the PathItem field type actually computed and auto-load stored aliases

Issue #2870453 by Lendude, michielnugter, dawehner: Convert web tests to browser tests for node module

Revert "Issue #992540 by valthebald, ndobromirov, jec006, kid_icarus, rickmanelius, Matt V., aerozeppelin, Munavijayalakshmi, gaurav.kapoor, swentel, klidifia, Yogesh Pawar, Everett Zufelt, grendzy, cashwilliams, lachezar.valchev, alexpott, tstoeckler, catch, Heine: Nothing Clears the "5 Failed Login Attempts" Security message"

This reverts commit cade2c61.

Issue #2879757 by naveenvalecha, phenaproxima: Add phenaproxima and seanB as subsystem maintainers for Media

Issue #2447729 by phenaproxima, heddn: Migrate D6 user reference fields to D8 entity reference field storage config entities

Issue #2472337 by damiankloip, alexpott, Jo Fitzgerald, dawehner, bojanz, Wim Leers: Provide a lazy alternative to service collectors which just detects service IDs

Issue #2864807 by droplet, amateescu, cilefen, CatsFromStonehenge, Wim Leers: Autocomplete textfield surrounds titles with double quotes

Issue #2785135 by tedbow, RajeevK, effulgentsia, alexpott: Rename protected property SystemMenuOffCanvasForm::$entity to $menu?