Issue #3020876 by alex_optim, sakiland, batkor, pfrenssen, mohit_aghera, i-trokhanenko, drclaw, iamdroid, Grayle, tim.plunkett, gun_dose, acbramley, Chris Burge, Sam152, longwave: Contextual links of reusable content blocks are not displayed when rendering entities built via Layout Builder

Issue #3202145 by kuldeep_mehra27, phenaproxima, bkosborne, Chris Burge: oEmbed resource fetcher needs to set a reasonable connection timeout

Issue #3186184 by phenaproxima, larowlan, xavier.masson, Berdir, mstrelan, hchonov, Chris Burge, longwave, Lendude: Make oEmbed provider repository more fault-tolerant if provider database is unavailable

Issue #2834958 by huzooka, Chris Burge, alfaguru, Wim Leers, Lendude: file_validate_extensions() incorrectly assumes $file->filename contains the file's extension

Issue #3097416 by b_sharpe, phenaproxima, Chris Burge, seanB, webchick, oknate: When embedding media, don't let authors choose view modes that are not enabled for that media type

Issue #3151800 by pameeela, ayushmishra206, paulocs, adityasingh, quietone, Bobík, longwave, Chris Burge: Describe what setInternal does

Issue #2911527 by harsha012, b_sharpe, Chris Burge, Manav, jibran, Waldoswndrwrld, christinlepson, vacho, mttsmmrssprks, nicholasThompson, Wim Leers, othermachines, Sutharsan: Allow dashes in Styles dropdown's element names

Issue #3161300 by jungle, TR, Hardik_Patel_12, Chris Burge, longwave, Kristen Pol: Improve test coverage of \Drupal\Tests\layout_builder\Unit\SectionTest::testUnsetThirdPartySetting()

Issue #3103529 by alexpott, mcdruid, Chris Burge, greg.1.anderson, rfay, anavarre, catch, Gábor Hojtsy: Drupal 8.8.1+ and 9 can fail to install in the web browser due to cache pollution

Revert "Issue #3103529 by mcdruid, alexpott, Chris Burge, greg.1.anderson, rfay, anavarre, Gábor Hojtsy: Drupal 8.8.1+ and 9 can fail to install in the web browser due to cache pollution"

This reverts commit 8a23417a.

Issue #3103529 by mcdruid, alexpott, Chris Burge, greg.1.anderson, rfay, anavarre, Gábor Hojtsy: Drupal 8.8.1+ and 9 can fail to install in the web browser due to cache pollution