Here is a list of what was fixed since 12.4.15:

• 2024-06-11 f4fc1cec1b [RELEASE] Release of TYPO3 12.4.16 (thanks to Oliver Hader)
• 2024-06-11 d70c72eb07 [BUGFIX] Avoid text selection when dragging tree nodes (thanks to Andreas Kienast)
• 2024-06-11 8b0563b0f5 [BUGFIX] Return to first module when closing a shared record-edit link (thanks to Benjamin Franzke)
• 2024-06-10 faec6cf85e [BUGFIX] Prevent backend errors for invalid backend_layout config (thanks to Garvin Hicking)
• 2024-06-10 a3e39c1a5b [BUGFIX] Omit wrong value on inserting record (thanks to Oliver Bartsch)
• 2024-06-10 5c1e6b280d [TASK] Have minor wording change in adminpanel Inspecting ReST (thanks to Sandra Erbel)
• 2024-06-10 d25bc6eb2c [TASK] Add ARIA role and labelledby to content elements in page module (thanks to Christian Rath-Ulrich)
• 2024-06-10 026a00d36c [TASK] Have minor wording change in adminpanel Configuration ReST (thanks to Sandra Erbel)
• 2024-06-10 6b067a2d77 [TASK] Mitigate PHPUnit NameAlreadyInUseException (thanks to Stefan Bürk)
• 2024-06-10 f1e1bf33d0 [BUGFIX] Ensure access check for module aliases (thanks to Thomas Hohn)
• 2024-06-08 291c9601c4 [BUGFIX] Use ILIKE for like queries with PostgreSQL (thanks to Georg Ringer)
• 2024-06-07 0e625745e5 [BUGFIX] Properly check array access in EXT:indexed_search (thanks to Georg Ringer)
• 2024-06-07 6eaa08de34 [DOCS] Fix typos in EXT:dashboard widget documentation (thanks to Charles Krüger)
• 2024-06-06 f81a4d12e9 [BUGFIX] Prevent runTests.sh from removing wrong generated docs files (thanks to Garvin Hicking)
• 2024-06-06 a217cc5954 [BUGFIX] Remove backtick operator in runTests.sh help output (thanks to Garvin Hicking)
• 2024-06-06 35cc4e3f0a [BUGFIX] Avoid text selection when dragging toolbar nodes (thanks to Andreas Kienast)
• 2024-06-05 09414aee51 [TASK] Require array in setFlatConstants() (thanks to Christian Kuhn)
• 2024-06-05 3bcd60f04a [BUGFIX] Guard array key access in SetupModuleController (thanks to Ziad Abdul Hai)
• 2024-06-05 76a1bcb23c [BUGFIX] Perform is_dir without trailing slash (thanks to Benjamin Franzke)
• 2024-06-05 43650c743d [DOCS] Add details to "Trusted Host Pattern" installer warning message (thanks to Garvin Hicking)
• 2024-06-05 33792566ed [TASK] Add description to allowed_languages field (thanks to Marcin Sągol)
• 2024-06-05 0c909efe21 [BUGFIX] Restore open document selector class (thanks to ullio)
• 2024-06-05 984c15f8ab [TASK] Relogin on lost ac test session (thanks to Christian Kuhn)
• 2024-06-05 9e63dc5cba [TASK] Clarify constants do not work in constant conditions (thanks to Christian Kuhn)
• 2024-06-05 837f5b0b55 [BUGFIX] Add constant evaluation in TypoScript functions (thanks to Garvin Hicking)
• 2024-06-04 9e7025c745 [BUGFIX] Prefer to throw in IdentifierFunctionLine (thanks to Christian Kuhn)
• 2024-06-04 ecd1aee6e6 [BUGFIX] Declare setFlatConstants() returns void (thanks to Christian Kuhn)
• 2024-06-04 f757b19559 [BUGFIX] Do not set original token value stream in TS AstBuilder (thanks to Christian Kuhn)
• 2024-06-04 d41fc91e0f [BUGFIX] IRRE: Rewrite stylesheet loading sequence (thanks to Andreas Kienast)
• 2024-06-04 f6fda30701 [TASK] Reduce GU::makeInstance calls in Unit Tests (thanks to Anja Leichsenring)
• 2024-06-04 5a775b87c6 [TASK] Update ckeditor to 41.4 (thanks to Andreas Kienast)
• 2024-06-03 86f36638b8 [TASK] Introduce YAML file linting (thanks to Stefan Bürk)
• 2024-06-03 39b6e51b48 [BUGFIX] Fix initialization of 00:00 time input (thanks to Imko Schumacher)
• 2024-06-03 eedc4621b9 [BUGFIX] Make DebuggerUtility UTF-8 aware for substring splitting (thanks to Garvin Hicking)
• 2024-06-02 5965a0f3b0 [TASK] Update composer.lock (thanks to Nikita Hovratov)
• 2024-06-01 883caeb42a [TASK] Suppress phpstan error in GU::makeInstance (thanks to Anja Leichsenring)
• 2024-05-31 3ae4193e96 [BUGFIX] Do not render nonceProxy if nonce has not been consumed (thanks to Benjamin Franzke)
• 2024-05-31 7f05cac752 [BUGFIX] Add type cast to string to stdwrap methods (thanks to Georg Ringer)
• 2024-05-31 1fdd246e04 [TASK] Remove unneeded $siteMockRevelation in SiteResolvingTest (thanks to Andreas Kienast)
• 2024-05-29 bf2b5a8e5f [BUGFIX] Resolve falsy ENV-variables in YAML Site Configuration values (thanks to Garvin Hicking)
• 2024-05-29 681ec9d6e9 [BUGFIX] Use parent's module icon as fallback for shortcuts (thanks to Georg Ringer)
• 2024-05-28 d768649c97 [TASK] Update less class state in TypoScript tokenizers (thanks to Christian Kuhn)
• 2024-05-28 1441f9ad16 [BUGFIX] Parse INCLUDE_TYPOSCRIPT conditions that contain ">" (thanks to Christian Kuhn)
• 2024-05-27 87d77dc3d7 [BUGFIX] Correctly resolve relative imports in page.tsconfig (thanks to Benjamin Franzke)
• 2024-05-27 6f742ab962 [TASK] Avoid implicitly nullable class method parameter (thanks to Stefan Bürk)
• 2024-05-27 7076296bcb [TASK] Avoid implicitly nullable parameter on DatabaseRecordException (thanks to Stefan Bürk)
• 2024-05-27 cf0e971e1a [TASK] Remove doctrine/dbal version aware method mocking in tests (thanks to Stefan Bürk)
• 2024-05-26 1f61de3383 [BUGFIX] Avoid broken assertion in ExtensionRepositoryTest (thanks to Christian Kuhn)
• 2024-05-26 78144c0971 [BUGFIX] Avoid 4th argument on GU::callUserFunction() in test (thanks to Christian Kuhn)
• 2024-05-26 93bbb71e8c [TASK] Avoid unused arg in PageTsConfigRecordsOverviewController (thanks to Christian Kuhn)
• 2024-05-25 cab25ad4f1 [TASK] Avoid direct MySQL mention in README.md (thanks to Robert Silén)
• 2024-05-25 9f7ac6a5a4 [BUGFIX] Resolve display name for shortcuts (thanks to Georg Ringer)
• 2024-05-25 c945dc7640 [BUGFIX] Add proper check in TcaInputPlaceholders (thanks to Georg Ringer)
• 2024-05-25 1aee45c0d2 [TASK] Split an unhappy unit test (thanks to Anja Leichsenring)
• 2024-05-24 fc5d3a6e7c [TASK] Improve usability of user/group select in log module (thanks to Georg Ringer)
• 2024-05-24 64653acdcd [TASK] Add some ThumbnailViewHelper functional tests (thanks to Stefan Bürk)
• 2024-05-24 3d47595a44 [TASK] Remove todo in extbase persistence backend (thanks to Torben Hansen)
• 2024-05-24 1e3605acf9 [DOCS] Improve bin/typo3 cache:flush description (thanks to Lina Wolf)
• 2024-05-24 1de207027a [BUGFIX] Respect doctype when generating meta tags (thanks to Oliver Bartsch)
• 2024-05-22 c9c46ae52e [BUGFIX] Fix return type of Query::execute() (thanks to Sascha Egerer)
• 2024-05-22 d92b76071e [TASK] Tune CI jobs (thanks to Christian Kuhn)
• 2024-05-22 fc35e5a972 [TASK] Utilize PackageDependentCacheIdentifier in TsConfigTreeBuilder (thanks to Benjamin Franzke)
• 2024-05-21 7a3f769132 [BUGFIX] Prevent array to string conversion in BackendUtility (thanks to Oliver Bartsch)
• 2024-05-21 9d805ff643 [TASK] Run test lintPhp on all CPU cores (thanks to Ayke Halder)
• 2024-05-17 04e2c59851 [TASK] Fix copy/paste error in EXT:scheduler manual (thanks to markuskappe)
• 2024-05-17 da255171ee [TASK] Update friendsofphp/php-cs-fixer to 3.57.1 (thanks to Wouter Wolters)
• 2024-05-16 7cb95ca3b8 [DOCS] Improve "_assets" composer directory migration issues (thanks to Garvin Hicking)
• 2024-05-15 8d2fda1d3a [BUGFIX] Stabilize backend user acceptance test (thanks to Stefan Bürk)
• 2024-05-14 88934f5414 [BUGFIX] Avoid double-encoding of delete label (thanks to Andreas Kienast)
• 2024-05-14 f067aad169 [BUGFIX] Allow search for newly created versioned records in page tree (thanks to Benni Mack)
• 2024-05-14 12549aa551 [TASK] Set TYPO3 version to 12.4.16-dev (thanks to Oliver Hader)