Issue #3038988 by Berdir, seanB: Remove support for empty destination in FileSystem::copy(), FileSystem::move() and FileSystem::saveData()

Issue #2994909 by bnjmnm, tedbow, kostyashupenko, tim.plunkett, lauriii, samuel.mortenson, Kristen Pol, xjm, andrewmacpherson, alwaysworking, DyanneNova, jrockowitz, worldlinemine, phenaproxima, ckrina, benjifisher, rainbreaw, webchick: Highlight active element while working with dialogs in Layout Builder

Issue #2825446 by Pancho, anavarre, michielnugter, dww, Lendude, dmsmidt: Moving a filter to the end of a Filter group in filter rearrange doesn't work but does allow dropping in invalid regions

Issue #3002608 by bnjmnm, tedbow, Wim Leers, samuel.mortenson, tim.plunkett, xjm, lauriii, jibran, phenaproxima, effulgentsia: Remove contextual links not related to layout administration inside layout builder blocks

Issue #2895487 by mikelutz, Mile23: [Symfony 4] ContainerAwareEventDispatcherTest depends on Symfony tests

Issue #3038309 by shaal, rteijeiro, kjay, Eli-T, smaz, estoyausente, isholgueras, rjfg, saesa: Spanish translations of Umami demo recipes

Issue #3038297 by shaal, smaz, estoyausente, kjay, Eli-T, saesa: Spanish translations of Umami demo categories

Issue #3038307 by shaal, saesa, smaz, Eli-T, kjay, rteijeiro, estoyausente: Spanish translation of Umami demo page

Issue #3038313 by shaal, kjay, paco.gracia, smaz, Eli-T, estoyausente, tunic, saesa, rteijeiro: Spanish translations of Umami demo articles

Issue #3038901 by Lendude, dww, Mile23: Speed up the tests on DrupalCI by not running slow tests last

Issue #2998772 by msankhala, hazong, heddn, alexpott: Document how to specify route options in links.menu.yml

Issue #3041143 by tim.plunkett, cboyden, xjm, phenaproxima, rainbreaw: Add ARIA group roles to Layout Builder UI

Issue #2843147 by Wim Leers, e0ipso, gabesullice, dagmar, xjm, effulgentsia, webchick, dww, Berdir, dawehner, colan, mgalalm, govind.maloo, das-peter, jludwig, ndobromirov, martin107, abhisekmazumdar, nuez, catch, amateescu, pwolanin, mallezie, borisson_, jibran, voleger, plach, GeduR, Grimreaper, apupiales, Sutharsan, RenatoG, michaellander, sergesemashko, dbt102, hampercm, dremy, rpayanm, chriscalip, tstoeckler, keopx, skyredwang, Spleshka, RajeevK, matthew.perry, kaysenlau, jazzdrive3, dsdeiz, ebeyrent, acbramley, deviantintegral, samuel.mortenson, DamienMcKenna, mohit_aghera, ibustos, dpolant, garphy: Add JSON:API to core as a stable module

Issue #3041107 by tim.plunkett, Wim Leers, xjm: Remove EntityDisplaySectionsTest in favor of a full suite of REST/HAL tests

(cherry picked from commit eae8a6c1)

Issue #2977510 by kjay, shaal, markconroy, finnsky, Vidushi Mehta, Eli-T: Refactor/improve Umami demo's search form CSS for better responsive support

Issue #3036787 by yongt9412, Berdir: media_post_update_enable_standalone_url() should only set TRUE if not already set

Issue #3035297 by claudiu.cristea, martin107, andypost: Don't use drupal_static in AutoIncrementingTestItem

Issue #3019115 by tamer.kamel, Waldoswndrwrld, anantjain60, gnuget, Berdir, alexpott: TwigExtensionTest::testFormatDate() doesn't make much sense

Issue #3023797 by seanB, webchick, lauriii, ckrina, phenaproxima, andrewmacpherson, rainbreaw, Gábor Hojtsy, jhodgdon, jrockowitz, worldlinemine, benjifisher: Let users choose what to do after selecting and/or adding items in the media library

Issue #3035383 by andypost, martin107, Berdir: Replace deprecated usages of entityManager in list builder classes

Issue #3016807 by seanB, FeyP, phenaproxima, andrewmacpherson, lauriii, rainbreaw, larowlan: Improve refocus on submit buttons of Media Library Widget modals

Issue #3038926 by Berdir: Add @trigger_error() to deprecated EntityManager->EntityDisplayRepository methods

Issue #2999893 by penyaskito, shaal, markconroy, mpp: Ensure umami views filter content by content negotiated language

Issue #2868725 by msankhala, Krzysztof Domański, xlin, cilefen, dagmar, dawehner, alexpott, joachim: Refactor how dblog module is rendering links in event details

Issue #3023801 by seanB, DamienMcKenna, lauriii, phenaproxima, Berdir, Pancho, marcoscano, Wim Leers, rainbreaw, larowlan, webchick, jrockowitz, andrewmacpherson, ckrina: Allow newly uploaded files to be deleted from the media library without saving them

Issue #3028771 by shaal, Not Real, pawandubey, kjay, smaz, Eli-T: Add some missing RTL css for the umami demo

Issue #2599228 by tstoeckler, Taran2L, poornachandran, catch, vacho, johan.s, Berdir, hchonov, osman, tim.plunkett, GoZ, Voidtek, neetu morwani, psf_, alexpott, dxvargas, nkoporec, plach, andy@andyhawks.com, joey-santiago: Programmatically created translatable content type returns SQL error on content creation

Issue #3040241 by bnjmnm, lauriii, DyanneNova: Add section and add block section doesn't have sufficient color contrast for text

Issue #3039081 by claudiu.cristea: Remove reset of user_role static cache in UserRoleAdminTest::testRoleWeightOrdering()

Issue #3037129 by tim.plunkett, andrewmacpherson, phenaproxima: Use distinct accessible names for the configure-section buttons in Layout Builder UI

Issue #3037121 by bnjmnm, andrewmacpherson, tim.plunkett: Disclosure triangle is missing in details/summary groups in off-canvas dialog in Firefox