Issue #2042447 by David_Rothstein, joelpittet, stefan.r, SebCorbin, mpdonadio, steinmb, webchick, Cottser, miniwebs2, Vj, Gilbert Rehling, nuwe, yched, StuartJNCC, Fabianx, yktdan, herom: Install a module user interface does not install modules (or themes)

Issue #2467863 by Dom., JesseSturgis, mgifford, LewisNyman, Cliff, benjifisher, heatherwoz, crasx: Login form's aria-describeby points to an element that doesn't exist

Issue #2474471 by geertvd, pjbaert, StryKaizer, koence, dawehner, pjonckiere: Views page displays do not accept an integer as path

Issue #2546582 by alexpott, dawehner: AssertContentTrait::getTextContent() includes the @import css statement, that is nuts

Issue #2541800 by jhodgdon, Gábor Hojtsy: Some config do not inherit from config_object, so locale_system_set_config_langcodes() results in schema errors

This inadvertently broke some config schema stuff we don't yet have tests for.

This reverts commit f541fae9.

Issue #2534012 by phenaproxima, hussainweb, mikeryan: Move module-specific migration support into the file module

Issue #2542292 by stefan.r, borisson_: Use TranslationWrapper instead of t() Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem::propertyDefinitions

Issue #2403229 by robertdbailey, andypost, penyaskito, Gábor Hojtsy: language.negotiation configuration can have overrides bleed in

Issue #2419475 by pjbaert, DickJohnson, emma.maria, Luxian, LewisNyman, tadityar, idebr, floretan, lauriii: Clean up the "Featured bottom" component in Bartik

Issue #2398453 by DickJohnson, idebr, LewisNyman, Manjit.Singh: Clean up the "admin" component in Bartik

Issue #2532284 by sasanikolic, joelpittet, cilefen, miro_dietiker: HTML is escaped in "all languages" in UI after SafeMarkup change

Issue #2173527 by idflood, scresante, rpayanm, mgifford, Sam152, Wim Leers: The Menu-Toolbar area should be refactored so that Tray items are nested in the same container as their associated parent Toolbar item

Issue #2364467 by Mile23, neclimdul: SpecialAttributesRouteSubscriber::onAlterRoutes() doesn't return a value

Issue #2421663 by timmillwood, dmitrii, amateescu, dawehner, xjm: Statistics module installs {node_counter} even if Node is uninstalled

Issue #2533964 by edurenye, Berdir, Gábor Hojtsy: Langcode widget visibility settings from language.module are not applied consistently

Issue #2544830 by jhedstrom, jhodgdon: Views search filter needs additional WHERE on search_index table

Issue #2544122 by harjotsingh: Missing leading backslash in documentation for \Drupal\views\ViewExecutable::setResponse

Issue #2541432 by Wim Leers: Follow-up for #2231595: Document why ChainedFastBackend cannot use BackendChain

Issue #1949032 by irfworld, geertvd, dawehner: Add a message when a view saved during wizard creation

Issue #2539682 by borisson_, Wim Leers: Add test to ensure composer.json is listing all core modules

Issue #2426969 by David_Rothstein, joelpittet, dawehner: Dynamic redirects are no longer possible in the batch API (breaks updating existing modules or themes with the Update Manager)

Issue #2501455 by Cottser, alexpott, akalata: Remove SafeMarkup::set() in drupal_render_children() and replace it with SafeString

Issue #1639012 by nod_, corbacho, sun, droplet, seutje, tim.plunkett: Guard against broken behaviors

Issue #2461013 by Berdir, keopx, Denchev, Gábor Hojtsy, xjm: Trying to display not specified or not applicable languages with LanguageFormatter results in fatal error