Issue #1998658 by larowlan: Fixed Creating Custom Block with same name as existing block throws SQL error.

Issue #2059719 by mdrummond: Fixed Content translation admin CSS file not renamed from translation_entity().admin.css.

Issue #2011122 by hussainweb, kgoel, chrisjlee: Replace drupal_container() with injected services in the rest module.

Issue #2057725 by tim.plunkett, quicksketch: Fixed Regular forms cannot be submitted when used as modal forms.

Issue #1862390 by oriol_e9g, billk2, ACF, LinL: Coding standards - trailing comments in taxonomy.admin.inc

Issue #1905018 by Wim Leers, effulgentsia: Improve method names or return values of CKEditorPluginManager::getEnabledPlugins() and getButtonsPlugins().

Issue #2056845 by StephaneQ | tstoeckler: Fixed Stale documentation in drupal_bootstrap() regarding DRUPAL_ROOT.

Issue #2010982 by somepal, andypost, pplantinga | Samvel: Replace theme() with drupal_render() in system module for system_status().

Issue #2058257 by effulgentsia: Fix ConfigFieldItemInterface's method signatures to typehint interfaces instead of classes.

Issue #2009574 by e2tha_e, adamcowboy, Samvel, jenlampton: Replace theme() with drupal_render() in forum module.

Issue #1933426 follow-up by dawehner: Fixed documentation around drupal_add_js -> drupal_add_library change.

Issue #2008970 by markie, StephaneQ, adamcowboy | thedavidmeister: Replace theme() with drupal_render() in aggregator module.

Issue #2003260 by ebeyrent, DmitryDrozdik, kgoel: Replace drupal_container() with Drupal::service() in the breakpoint module.

Issue #1815886 follow-up by slashrsm: Upgrade path for Drupal core cannot manage files larger than 4 GB

Issue #2031529 by Wim Leers, oadaeh: Fixed JavaScript error when submitting a form that has a text_format() selector set to a text format without associated text editor.

Issue #2026089 by Manuel Garcia: Change the documentation page link in content_translation() module.

Issue #2058435 by David_Rothstein: Fixed Drupal 8 lost support for the 'tel' protocol in URL filtering functions.

Issue #2049159 by amateescu, Crell: Create a ControllerBase class to stop the boilerplate code madness.