SA-CORE-2019-002 by greggles, cashwilliams, EclipseGc, larowlan, samuel.mortenson, alexpott, tedbow, effulgentsia, Fabianx, xjm, mlhess

Issue #2998769 by kiamlaluno, quietone, kkalaskar: @see directive used in the wrong place outputs the wrong HTML markup

(cherry picked from commit 6d98f6bf)

Issue #3000677 by catch, Shane Birley, featherbelly, alexpott, larowlan: Fatal error after upgrade to 8.6x [due to regression in extension system]

Issue #2955457 by pfrenssen, Chewie, unrealauk, alexpott, Pol: ConfigFactory static cache gets polluted with data from config overrides

Issue #2701829 by alexpott, andypost, Soul88, Graber, Eduardo Morales, dawehner, pingwin4eg, catch, Berdir, jibran, httang12: Extension objects should not implement \Serializable

Issue #3001997 by Krzysztof Domański, scott_euser, alexpott: Transliteration a string containing an unknown character (e.g. 0x80) is not valid

(cherry picked from commit f9e7921b)

This reverts commit 12173dcf.

(cherry picked from commit 994e7ec7)

(cherry picked from commit 46f02154)

Issue #2809305 by Upchuk, Pavan B S, Jo Fitzgerald, tim.plunkett, Berdir: Block Context assignment form element shows even if no options are available

(cherry picked from commit 55f13aac)

(cherry picked from commit a9472244bf827f1e6549e9edb6997bd508d4bd16)

Issue #2998462 by AndyF, Baysaa, Siavash, tim.plunkett, millionleaves, fatmarker: Error adding Content Type Selection criteria or Context

(cherry picked from commit 14606cca)

(cherry picked from commit f7f07d81)

Issue #2883260 by kiamlaluno, yogeshmpawar, msankhala, benjifisher, alexpott, bdlangton: Replace the schema example with one actually used from a module

(cherry picked from commit b9c85bd4)

(cherry picked from commit 2b511ec3)

(cherry picked from commit 76bb5111)

Issue #3014669 by kalyansamanta, govind.maloo, msankhala, hardikpandya, joachim, awangsetyawan: return value for hook_entity_bundle_info() doesn't mark 'uri_callback' as optional

(cherry picked from commit 5a83be42)

Revert "Issue #3016458 by tim.plunkett, xjm: ContextHandler should use setContext() not setContextValue()"

This reverts commit 2b93e802.

(cherry picked from commit b33232b7)

Revert "Issue #3000630 by scott_euser, Krzysztof Domański, APolitsin, vijaycs85, longwave: Transliteration causes 2 capital letters at the beginning of a word"

This reverts commit 35c3d18a.

Issue #2936032 by gambry, nlisgo, alexpott, cwells, cilefen, Darvanen, DamienGR: Sites named with special characters cannot send mail

(cherry picked from commit 53c24728)

Issue #3014851 by tim.plunkett: ContextAwarePluginBase::setContextValue() should delegate to ::setContext()

(cherry picked from commit 7dcb9273)

Issue #3000630 by scott_euser, Krzysztof Domański, APolitsin, vijaycs85, longwave: Transliteration causes 2 capital letters at the beginning of a word

(cherry picked from commit bb7fb6a3)

Issue #3013029 by amateescu, dolu: StringFormatter should check whether an entity type has a 'revision' link template

(cherry picked from commit 58cffff6)

Issue #2986887 by hchonov, tstoeckler, amateescu, alexpott: Impossible entity query with condition on revision metadata keys

(cherry picked from commit 78da9a1d)

(cherry picked from commit d1c7fa1b)

Issue #2982626 by phenaproxima, tim.plunkett, EclipseGc: ContextAwarePluginBase is incompatible with ContextAwarePluginDefinitionInterface

(cherry picked from commit 9e18995a)

(cherry picked from commit 18ff78aaf0a95df98c78581f5d6cab579dcfb30c)

Issue #2342699 by Beakerboy, david_garcia, alexpott, madhavvyas, Nitesh Sethia, mradcliffe, plach, rakshith.thotada, ruloweb, deepakaryan1988, Berdir, rbrenton: SqlContentEntityStorage tries to update identity/serial values by default

(cherry picked from commit c8f810ed)

Lee Rowlands authored Sep 25, 2018 and Angie Byron committed Nov 12, 2018

Issue #2992410 by tim.plunkett, scottsawyer, sugaroverflow, phenaproxima: Provide placeholders for empty blocks (for example, an empty Views listing)

(cherry picked from commit 53f19807)

catch authored Nov 06, 2018 and Lee Rowlands committed Nov 09, 2018

(cherry picked from commit 39c3361d)

Issue #3002522 by andypost, Matthijs, tim.plunkett, wizonesolutions: Calling StatusMessages::renderMessages() with a  returns a faulty render array

(cherry picked from commit e1b6d232)