Issue #3219140 by danflanagan8, huzooka, quietone, Wim Leers: d7_language_content_comment_settings triggers MigrateException if the source bundle is longer than 32 chars: use migration_lookup

(cherry picked from commit 0acc2f33)

Issue #2909805 by googletorp, fgm, dagmar, ankithashetty: LogMessageParser breaks messages containing braces

(cherry picked from commit f6531023)

(cherry picked from commit 117db6f9)

Issue #2974156 by MegaChriz, k4v, John.nie, jian he, darrenwh, jurgenhaas, daffie, DuneBL, alexpott: TypeError: Argument 1 passed to _editor_get_file_uuids_by_field() must implement interface Drupal\Core\Entity\EntityInterface

(cherry picked from commit cd735be4)

Issue #3212670 by Sakthivel M, shashwat-tiwari, kiran.kadam911, Gauravmahlawat, mherchel: Olivero: Z-index issue with the search bar

(cherry picked from commit aafc501d)

Issue #3242469 by mherchel, andy-blum, scorbine: Insufficient contrast on Olivero's inactive vertical form labels

(cherry picked from commit 2c2da2b6)

Issue #3242456 by mherchel, andy-blum, scorbine: Insufficient contrast on Olivero's fieldset elements

(cherry picked from commit 3c98f0ea)

Issue #3223271 by mherchel, bnjmnm, pjudge, lauriii, javi-er, andrewmacpherson: Olivero: Select dropdown icons need more contrast in Windows High Contrast mode

(cherry picked from commit 7357ae8a)

Issue #3223281 by mherchel, andy-blum, andrewmacpherson, mgifford, mikemai2awesome: Olivero: Primary nav search icon invisible in forced-colors mode in MS Edge

(cherry picked from commit c788d3fc)

Issue #2936067 by pfrenssen, bradjones1, nod_, eiriksm, DuaelFr, Clemens Sahs, AndyF, alexpott, lauriii, idimopoulos: CSS aggregation fails on many variations of @import

(cherry picked from commit 7374845d)

(cherry picked from commit cbf7b552)

Issue #3228000 by bbrala, larowlan, GuyPaddock, Wim Leers, bradjones1, alexpott, catch, e0ipso: Users deleted via JSON:API DELETE don't follow the site-wide cancel_method in the user settings

(cherry picked from commit 9d8e7da4)

Issue #3192365 by Symbioquine, tbradbury, mxr576, alexpott, longwave: Race Condition in 'public://simpletest' mkdir Call

(cherry picked from commit ac01e625)

Issue #3211622 by Gauravmahlawat, mherchel, kiran.kadam911, rikki_iki: Olivero: Text can be cut off at mobile if site-branding text goes to two lines

(cherry picked from commit df024ac4)

Issue #3226010 by mariohernandez, kostyashupenko, Gauravmahlawat, mherchel: Olivero: Skip link fails accessibility color test on hover

(cherry picked from commit 4313e7f4)

Issue #3194669 by andrewmacpherson, mherchel, m4olivei, lauriii, mgifford: Misuse of explicit colour for active pager item in -ms-high-contrast media query

(cherry picked from commit 98a6e3ea)

Issue #3228801 by mherchel, Indrajith KB, kostyashupenko, Gauravmahlawat, ckrina: Olivero's wide dropdown hover states are broken

(cherry picked from commit de073bca)

Issue #3229172 by kostyashupenko, rkoller, Wim Leers, yash.rode, lauriii: Underlined text in CKEditor 5 not rendered as underlined in Claro

(cherry picked from commit 9f574ee7)

Issue #3230547 by larowlan, karishmaamin, amjad1233: \Drupal\media\Controller\OEmbedIframeController::render doesn't set a content-type header

(cherry picked from commit 0a5beb30)

Issue #3132145 by mohit_aghera, codersukanta, osab, mashot7, Lendude: Views contextual filter: "allow multiple" doesn't work for user roles filter

(cherry picked from commit eb2ed234)

Issue #3229734 by quietone, danflanagan8, Kristen Pol: Improve test and add comments to ContentEntityTest

(cherry picked from commit 0bed3aee)

Issue #3200534 by quietone, longwave, Kristen Pol: Use dataprovider for constructor test in ContentEntityTest

(cherry picked from commit c14450bc)

Issue #3230772 by larowlan, phenaproxima: OembedMediaController doesn't properly bubble cacheability metadata/attachments

(cherry picked from commit 0cbd31db)

Issue #3085192 by Wim Leers, focus13, grasmash: Add index on source_ids_hash for migrate_message_* tables

(cherry picked from commit f1c06e87)

Issue #3214675 by el7cosmos, bbrala, hehongbo, larowlan, alexpott: JSON:API Cannot upload files to public file root (Gets 422 Unprocessable Entity)

(cherry picked from commit a8d3f780)

Issue #3130606 by shaktik, mondrake, KapilV, longwave, daffie: MockBuilder::setMethods is deprecated in PHPUnit8 and removed from PHPUnit10

Issue #2556069 by claudiu.cristea, bnjmnm, lauriii, pfrenssen, Tim Bozeman, marcvangend, ikeigenwijs, Wim Leers, kevinquillen, esclapes, nod_: JS error with elements in "allowed HTML tags" that can't be direct descendants of a div

(cherry picked from commit 88498c78)

Issue #3211395 by Gauravmahlawat, andy-blum, aaron.ferris, Sakthivel M, kiran.kadam911, mherchel, tushar_sachdeva, xjm: Comment form save button has incorrect background color and contrast ratio violation on hover

(cherry picked from commit 8c2a1247)

SA-CORE-2021-009 by illeace, Wim Leers, xjm, effulgentsia, larowlan, pandaski, vijaycs85, phenaproxima, mcdruid

SA-CORE-2021-007 by samuel.mortenson, Wim Leers, greggles, xjm, larowlan, vijaycs85, Heine, effulgentsia, phenaproxima, mcdruid, nod_

SA-CORE-2021-006 by azinck, seanB, effulgentsia, marcoscano, larowlan, phenaproxima, xjm, mcdruid, drumm, briantschu

Issue #3190537 by kostyashupenko, mherchel, bnjmnm, xjm: Mobile search input in IE11 does not visually respond to keypress

(cherry picked from commit 838b9033)

Issue #2938969 by msankhala, dhirendra.mishra, paulocs, TR, MerryHamster, alexpott, jofitz, longwave, Manuel Garcia, tameeshb, boaloysius, Yasiru Nilan, xjm, wturrell, ritzz, ZeiP, darrenwh: Replace drupal_render() in docblock and comments outside of @param, @return, @Link, @see and outside of @code - @endcode

(cherry picked from commit 84fc7490)