Issue #2722237 by webflo, dawehner, borisson_, drunken monkey, Wim Leers: "Local actions" block doesn't take cache data of route access information into account

(cherry picked from commit c39368f7)

Issue #2794347 by nuez, Jo Fitzgerald, jmuzz, Lendude, boaloysius, klausi, jibran: Convert web tests to browser tests for field_ui module

Issue #2975388 by NickWilde, idebr: Replace Firefox @-moz-document url-prefix() css selector, since its support is being removed

(cherry picked from commit 3c15e75d)

Issue #3001851 by abramm, longwave: Incorrect documented CommentInterface::getCommentedEntity() return value

(cherry picked from commit f8f869f2)

Issue #3001782 by volkswagenchick, Eli-T, parijke, Kristen Pol, longwave: Misspellings and capitalization error in Umami content files

(cherry picked from commit eebd8656)

Issue #2625554 by Xano, googletorp, longwave, borisson_, dawehner, tim.plunkett, alexpott, twistor: getInstance() fatals on almost all plugin managers

(cherry picked from commit 56554f5d)

Issue #3002935 by Mile23, tim.plunkett, Berdir: Document that DeprecationListenerTrait::getSkippedDeprecations() should not be expanded for new deprecations

(cherry picked from commit 12d8100f)

Issue #2998748 by MaddieC, lauriii, markconroy, kjay: Horizontal Scrolling when screensize hits 960px

(cherry picked from commit bf9da01f)

Issue #2995078 by sugaroverflow, dead_arm: Add a title to the off-canvas dialog when opened by clicking "Add Block"

(cherry picked from commit 9ee0227b)

Issue #2686409 by mpdonadio, pjonckiere, claudiu.cristea, darrick, xSDx, bceyssens, tamasd, Ismail Cherri, joelpittet, dawehner, AdamPS, jhedstrom, JaceRider: Time Ago summary does not render on Manage Display for Timestamp and Datetime fields

(cherry picked from commit 21ba3dfc)

Issue #2867042 by jgrunert, jhodgdon, rakesh.gectcr, dawehner, jazzdrive3, alexpott, Loparev: Running any tests which extended from BrowserTestBase getting permission denied

(cherry picked from commit 8500f748)

Issue #3000424 by acbramley, rikki_iki: OEmbed Media Source and related controller use LoggerChannelInterface in their constructors which is not compatible with the monolog module

(cherry picked from commit e6a096cf)

(cherry picked from commit d938a141)

Issue #2986193 by amateescu, sim_1, andrewmacpherson: Workspace toolbar item fails WCAG Use-of-color at narrow breakpoint

(cherry picked from commit 31389337)

Issue #2974657 by leolando.tan, spitzialist, borisson_, neclimdul, alexpott: Improve FilterIdTest provider keys

(cherry picked from commit 5d8c1f49)

Issue #2809535 by Lendude, alexpott, martin107, dawehner, borisson_: Convert AJAX part of \Drupal\system\Tests\Ajax\MultiFormTest to JavascriptTestBase

(cherry picked from commit 35a2e489)

Issue #3002011 by Mile23, Wim Leers, Berdir, gabesullice: Remove @trigger_error() for 8.6.x Drupal\field\Tests\EntityReference\EntityReferenceTestTrait deprecation

Issue #2704597 by Neograph734, Berdir, izus, alexpott, TR: Relative URLs in mails should be converted to absolute ones

(cherry picked from commit 530f7ac5)

Issue #2809535 by Lendude, martin107, dawehner, borisson_, alexpott: Convert AJAX part of \Drupal\system\Tests\Ajax\MultiFormTest to JavascriptTestBase

(cherry picked from commit 3ba620b6)

(cherry picked from commit ddbef195)

Issue #2954825 by rakesh.gectcr, tresti88, gnuget, borisson_, DamienGR, Prashant.c, amietpatial, alexpott, joachim, Berdir: Update the user.api.php documentation and add the correct type hints in the user's hooks implementations

(cherry picked from commit 400413fa)

Issue #2846379 by alexpott, esolitos, casey: Processing paths in LanguageNegotiationUserAdmin causes 404s while accessing private files

(cherry picked from commit bfed684d)

Lee Rowlands authored Sep 22, 2018 and Alex Pott committed Sep 22, 2018

(cherry picked from commit 31147a0e)

Issue #2484693 by mjpa, dww, DuaelFr, vaplas, kyvour, benjy, JinX-Be, wengerk, thamas, FMB, ndf, jcnventura, catch: Telephone Link field formatter InvalidArgumentException with 5 digits or fewer in the number

(cherry picked from commit f1b1d3f8)

Issue #2635712 by bendeguz.csirmaz, DeFr, redgluten, swentel, SylvainM, Wim Leers, SiliconMind, dbyers55, catapipper: Cannot use Quick Edit to delete an image

(cherry picked from commit b3576bbe)

Issue #2996789 by Mile23, Lendude, longwave, dawehner: Deprecate Drupal\field\Tests\EntityReference\EntityReferenceTestTrait

(cherry picked from commit 618274b9)

(cherry picked from commit da2a2d28)

(cherry picked from commit e22910b9)

Issue #2829185 by vaplas, Jo Fitzgerald, anmolgoyal74, chipway, gaurav.kapoor, mark_fullmer, amit.drupal, cilefen, longwave, xjm, wturrell, anavarre: Fix spelling errors in Drupal core comments

(cherry picked from commit 2dabd1de)

(cherry picked from commit 887e1dcd)

(cherry picked from commit e91f3d00)

Issue #2954776 by neclimdul, tim.plunkett, zenimagine, tedbow: Can not uninstall Field Layout while Layout Builder is installed

(cherry picked from commit 68f9fd50)

Issue #3000958 by virajrajankar, michaellenahan: Grammar error in FormState.php documentation comment for $rebuild

(cherry picked from commit 586d121c)

Issue #2999387 by iuana, tashaharrison80, fgm, mradcliffe: Types documented for method returns on ConfirmFormInterface are mostly wrong

(cherry picked from commit 00d864da)

(cherry picked from commit 7254e79e)

Issue #2874640 by martin107, Lendude, Utkarsh_Mishra, NickWilde, alexpott: Convert DialogTest to a FunctionalJavascript test

(cherry picked from commit 662b7944)

Issue #2983970 by ApacheEx, Mile23, scuba_fly: Convert system functional tests to phpunit /Routing/DestinationTest.php

(cherry picked from commit 5fee0255)

Issue #2994398 by tim.plunkett, phenaproxima, vmilic, Berdir, Wim Leers, tedbow, bradjones1: Not properly clearing EntityFieldManager's fieldMap leads to fatals, often after migration or bundle creation

(cherry picked from commit d3784a13)

Issue #2998483 by longwave, iuana, tstoeckler, Eli-T: Remove config-editing parts from demo_umami_install() in favor of exported configuration

(cherry picked from commit e4f5c03c)

Issue #2860341 by heddn, juampynr, seanB, RumyanaRuseva, ephod, stephsem23: PrivateTempStore->getOwner Attempts to access possibly unset Request Session

(cherry picked from commit 7ae9670d)