Issue #3419186 by Ruturaj Chaubey, phthlaap, balintpekker, smustgrave: Add a hook_ENTITY_TYPE_form_mode_alter()

Issue #3439671 by catch, alexpott: StandardPerformanceTest::testAnonymous is hard to get to pass locally

Issue #3427564 by phenaproxima, Wim Leers, alexpott, omkar.podey, Berdir, smustgrave, larowlan: Require `langcode: …` only for simple config that contains translatable values

Issue #3303557 by Binoli Lalani, quietone, catch, Tom Konda, smustgrave: Deprecate and remove the AJAX replace method

Issue #3257457 by DieterHolvoet, scott_euser, smustgrave, ankithashetty, alexpott, larowlan, Berdir, dww: AmbiguousBundleClassException if multiple entity types share the same class

Issue #3413508 by Jelle_S, taraskorpach, acbramley, smustgrave, alexpott, Eugen Zerr: Admin page access denied even when access is given to child items

Issue #3431452 by godotislate, smustgrave, alexpott: Rename RenderElement and FormElement plugin abstract classes to RenderElementBase and FormElementBase

Issue #3054821 by mr.baileys, wiifm, sime, angrytoast, pobster, smustgrave, RichardGaunt, alexpott, Wim Leers, quietone, Berdir, neclimdul, acbramley: Include Cache-Control header on 301 redirects

Issue #3432601 by catch, quietone, smustgrave: Add deprecation/bc support for library-overrides when files are moved

Issue #3352256 by e0ipso, plopesc, bbrala, longwave, dww, catch, larowlan: Move code from the experimental SDC module to core

Issue #3353918 by Spokje, longwave, rpayanm, mondrake: Fix PHPStan L1 errors "Variable $foo might not be defined." caused by non-exhaustive switch statements

Issue #3421439 by godotislate, sorlov, quietone, smustgrave, alexpott, larowlan, longwave, andypost: Convert form and render element plugin discovery to attributes

Issue #1149078 by vasike, wuinfo - Bill Wu, dww, Gauravvvv, Marios Anagnostopoulos, peterpoe, VladimirAus, legolasbo, GoZ, mgifford, dalin, jrb, heddn, himanshupathak3, _utsavsharma, GrandmaGlassesRopeMan, arcaneadam, danflanagan8, arnaud-brugnon, Daniel Kulbe, uzlov, Kuntyi, DamienMcKenna, Neslee Canil Pinto, COBadger, jofitz, esod, sukanya.ramakrishnan, nod_, droplet, smustgrave, CKIDOW: States API doesn't work with multiple select fields

Issue #3354998 by phthlaap, Liam Morland, jedihe, gapple, smustgrave: #states disable property has stopped working for submit button and other elements

Issue #3420984 by godotislate, andypost, smustgrave, larowlan, alexpott: Convert Layout DisplayVariant, PageDisplayVariant discovery to attributes

Issue #3109970 by znerol, andypost, Prashant.c, daffie, Wim Leers, dww, catch: Convert uses of $_SESSION in forms and batch

Issue #2663316 by omkar.podey, jofitz, alexpott, shashank5563, samuel.mortenson, Andrej Galuf, djsagar, silverham, juliaschwarz, lauriii, super_romeo, gawaksh, smustgrave, sakthi_dev, Pavan B S, lammensj, Wim Leers, camerongreen, quietone: Broken title in modal dialog when title is a render array

Issue #3333481 by phthlaap, galileo25, dmitry.korhov, smustgrave, mdolnik, quietone, nod_, alieffring: Collapsed Details Element causes JS Error for required fields

Issue #3408738 by omkar.podey, srishtiiee, kunal.sachdev, lauriii, Utkarsh_33, arisen, smustgrave, Wim Leers, catch, benjifisher: Create a new OpenModalDialogWithUrl command

Issue #2511308 by dimitriskr, ankithashetty, smustgrave, quietone, Wim Leers: Rename RendererInterface::renderPlain() to ::renderInIsolation()

Issue #3321634 by Spokje, andypost: Remove legacy experimental:true and its deprecation and test-files

Issue #3339374 by gapple, andypost, longwave, catch, smustgrave: [11.x] Require array argument for AddCssCommand

Issue #3420990 by godotislate, smustgrave, alexpott, kim.pepper, longwave: Convert Constraint plugin discovery to attributes

Issue #3420986 by kim.pepper, sorlov, larowlan, mstrelan: Convert Condition plugin discovery to attributes

Issue #3419987 by alexpott, Wim Leers, larowlan, dww: Fix Container::reset() and provide DrupalKernel::resetContainer()