Here is a list of what was fixed since 12.4.11:

• 2024-03-12 23e3cc9ee9 [RELEASE] Release of TYPO3 12.4.12 (thanks to Benni Mack)
• 2024-03-12 cb4242a046 [BUGFIX] Use original file for ProcessedFile::getMimeType and ::getSize (thanks to Christian Weiske)
• 2024-03-12 b2bf6bef38 [TASK] Limit commit message line length to 72 characters (thanks to Ayke Halder)
• 2024-03-11 66cfee5d14 [BUGFIX] Avoid PHP undefined array access in BrowseLinksController (thanks to Christian Kuhn)
• 2024-03-11 5fa8dd2a37 [BUGFIX] Proper URI generation in workspace preview for records (thanks to Can Adrian Karadag)
• 2024-03-11 ac015684a3 [TASK] Make admin user creation optional in CLI installer (thanks to Benjamin Franzke)
• 2024-03-11 d0c1c3fcf1 [BUGFIX] Let import handle missing TCA for file relations better (thanks to Patrick Schriner)
• 2024-03-11 b3ee9bac05 [BUGFIX] Fix FormEngine inline stylesheet resolution in composer mode (thanks to Benjamin Franzke)
• 2024-03-11 e7c2a48874 [BUGFIX] Allow empty page id for pageId in log module (thanks to Georg Ringer)
• 2024-03-11 6b15a8d440 [TASK] Upgrade TypeScript to 5.4 (thanks to Andreas Kienast)
• 2024-03-10 28f9287911 [DOCS] Rename .rst includes to .rst.txt (thanks to Lina Wolf)
• 2024-03-09 fde0499396 [DOCS] Put example input in backtics in form manual (thanks to linawolf)
• 2024-03-09 5646e2b34c [DOCS] Switch Low Level documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-09 f569676cf8 [DOCS] Remove unused files in Documentation folder (thanks to linawolf)
• 2024-03-09 4dfb2f03cd [DOCS] Adjust Includes.rst.txt after switch to PHP-based rendering (thanks to Chris Müller)
• 2024-03-08 c530630ee6 [BUGFIX] Avoid race condition in DI cache persistence (thanks to Benjamin Franzke)
• 2024-03-08 41c3601642 [BUGFIX] Allow backend:user:create CLI Command to use shortcut options (thanks to Garvin Hicking)
• 2024-03-08 a10230395f [DOCS] Move code snippets into separate files for EXT:rte_ckeditor (thanks to Chris Müller)
• 2024-03-08 b745c655db [DOCS] Switch Reports documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 1893c247b7 [DOCS] Switch sys_note documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 10b2d854f9 [DOCS] Switch Reactions documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 0cd5ef5817 [DOCS] Switch Redirects documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 19a40a576e [DOCS] Switch Recycler documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 95359cbc40 [DOCS] Switch seo documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 a3c17d4eae [DOCS] Switch scheduler documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 7bea8b51b3 [DOCS] Switch workspaces documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 29eb12946e [DOCS] Switch rte_ckeditor documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-08 73f8380808 [BUGFIX] Add tablename for matchfields of references (thanks to Georg Ringer)
• 2024-03-08 b8a47baf0c [DOCS] Fix Edit on GitHub Button for manuals (thanks to linawolf)
• 2024-03-07 24ee68c7a3 [BUGFIX] Do not try to log negative UID in DataHandler (thanks to Markus Klein)
• 2024-03-07 de2b49fb8c [BUGFIX] Exclude gbraid and wbraid parameters from cHash calculation (thanks to Daniel H)
• 2024-03-07 631c85d6bc [DOCS] Fix rendering warning in changelog (thanks to Chris Müller)
• 2024-03-07 961a860640 [TASK] Use composed URL in @typo3/backend/tree/page-browser (thanks to Andreas Kienast)
• 2024-03-07 78b8e4991d [DOCS] Update linkvalidator codesnippets (thanks to linawolf)
• 2024-03-07 f781d5d170 [DOCS] Streamline installation chapters of system extension manuals (thanks to Chris Müller)
• 2024-03-07 36f24c33e3 [DOCS] Switch Dashboard documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-07 f184aac1c8 [BUGFIX] Prevent RuntimeException in NewPages view (thanks to Oliver Bartsch)
• 2024-03-07 bef9c9a501 [DOCS] Add documentation for font plugin to CKEditor5 (thanks to Chris Müller)
• 2024-03-07 24bd2d0754 [DOCS] Switch Indexed Search documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-07 fc8fdef9c2 [DOCS] Switch linkvalidator documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-07 3ab75b690b [DOCS] Switch impexp documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-07 bbc85cdb6d [DOCS] Switch felogin documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-07 af8a48c1f5 [DOCS] Switch fluid_styled_content documentation to PHP-based rendering (thanks to linawolf)
• 2024-03-07 89ceafdea2 [DOCS] Fix references in admin panel (thanks to Chris Müller)
• 2024-03-07 e9058efca2 [DOCS] Add regex example to target column referencing capturing groups (thanks to Josef Glatz)
• 2024-03-06 aa125b661a [TASK] Add aria-label to datepicker button (thanks to Christian Rath-Ulrich)
• 2024-03-06 ffd1d9f1a5 [BUGFIX] Cast DOM attribute values to string (thanks to Helmut Hummel)
• 2024-03-06 efeeb0393f [DOCS] Add note about limitations of CKEditor5 CSS styling (thanks to Chris Müller)
• 2024-03-06 663ef25823 [BUGFIX] Prevent undefined array key warning in TcaSlug (thanks to Oliver Bartsch)
• 2024-03-06 7ede908d40 [TASK] Update ckeditor5 to v41.2 (thanks to Andreas Kienast)
• 2024-03-06 47dc9d7399 [BUGFIX] Remove array reset due to broken backwards compatibility (thanks to Daniel Dorndorf)
• 2024-03-06 a79f184b8a [BUGFIX] Prevent malformed SQL query in list module (thanks to Friedemann Altrock)
• 2024-03-06 9625eeccd7 [TASK] Update locales translation file (thanks to Christian Kuhn)
• 2024-03-05 a44285c97c [BUGFIX] Return valid markup in localization panel (thanks to Marvin Buchmann)
• 2024-03-05 a9d646e5b2 [TASK] Fix accessibility issues in topbar and menu (thanks to Frank Naegler)
• 2024-03-05 bde04189db [TASK] Revert "[TASK] Format fluid format tags consistently" (thanks to Benjamin Franzke)
• 2024-03-05 a0d903f3b0 [TASK] Respect alt text in backend thumbnails (thanks to Willi Wehmeier)
• 2024-03-05 eab4b0471d [TASK] Allow execution of acceptance tests with local chromedriver (thanks to Benjamin Franzke)
• 2024-03-04 4856074a4f [BUGFIX] Make context menu trigger a button (thanks to Oliver Bartsch)
• 2024-03-04 50b6c74db3 [BUGFIX] Respect old delimiter syntax in FileBrowser (thanks to Oliver Bartsch)
• 2024-03-04 d5d7ee36a4 [BUGFIX] Add missing file search to file link handler (thanks to Oliver Bartsch)
• 2024-03-04 bfd7cf902b [BUGFIX] Allow ws and wss schemes in TYPO3\CMS\Core\Http\Uri (thanks to Oliver Hader)
• 2024-03-04 bc9af760b8 [BUGFIX] Exclude gad_source parameter from cHash calculation (thanks to Andreas Kienast)
• 2024-03-04 cb23da6c33 [DOCS] Make the reason why noopener was removed more visible (thanks to Lina Wolf)
• 2024-03-04 13420f88fb [DOCS] Document index change for xml sitemap (thanks to André Buchmann)
• 2024-03-04 a360f91035 [TASK] Format fluid format tags consistently (thanks to Simon Schaufelberger)
• 2024-03-04 ffc307b7e5 [BUGFIX] Indicate loading process when requesting context menu (thanks to Andreas Kienast)
• 2024-03-04 99bdc230a1 [BUGFIX] Fix ContextMenu positioning race conditions (thanks to Benjamin Franzke)
• 2024-03-04 d627a4bb62 [BUGFIX] Do not race tree node loading (thanks to Andreas Kienast)
• 2024-03-02 b43fcc0103 [DOCS] Switch adminpanel docs to PHP-based rendering (thanks to linawolf)
• 2024-03-02 29c33e1e63 [BUGFIX] Make page tree workspace color important (thanks to Christian Kuhn)
• 2024-03-01 e01b305e14 [FOLLOWUP] Add type declaration for new argument (thanks to Oliver Bartsch)
• 2024-03-01 02a7c968e4 [TASK] Add pagetitle to tooltip on page icon in treeview (thanks to Willi Wehmeier)
• 2024-02-29 bd02b4b608 [BUGFIX] Honor workspace l10n_parent can point to live (thanks to Christian Kuhn)
• 2024-02-29 5e856cc6d2 [BUGFIX] Streamline typo3-spinner-icon element with SVG asset (thanks to Andreas Kienast)
• 2024-02-28 90a6c23bb8 [BUGFIX] Display error icon in folder field (thanks to Till Hörner)
• 2024-02-28 72d7f7c1f9 [BUGFIX] Allow maxitems=1 for TCA type category (thanks to Markus Klein)
• 2024-02-26 ee1950a0bb [TASK] Use codeception DataProvider attribute (thanks to Christian Kuhn)
• 2024-02-26 6c6a5ab2b9 [BUGFIX] Restore FileInterface::setContents() TODO comments (thanks to Mathias Brodala)
• 2024-02-26 710b092b96 [TASK] Require friendsofphp/php-cs-fixer:^3.50 (thanks to Christian Kuhn)
• 2024-02-26 55820a0de1 [TASK] Use phpunit attributes in functional tests (thanks to Christian Kuhn)
• 2024-02-25 146c5cd593 [DOCS] Use speaking array keys in changelog example (thanks to Oliver Bartsch)
• 2024-02-24 f6ed53024b [TASK] Raise to phpstan/phpstan-phpunit:^1.3.16 (thanks to Oliver Klee)
• 2024-02-24 f4e11f0e85 [TASK] Update PHPStan & friends (thanks to Oliver Klee)
• 2024-02-23 9da44d7920 [BUGFIX] Always set action argument for action ViewHelpers (thanks to Oliver Bartsch)
• 2024-02-23 549d1acb14 [TASK] Fix example of adding custom table to create database record reactions (thanks to tiggr)
• 2024-02-23 7e84231b50 [TASK] Use phpunit attributes over annotations (thanks to Christian Kuhn)
• 2024-02-23 20922f3b4c [DOCS] Correct field name in reaction's example (thanks to tiggr)
• 2024-02-23 945e27b0a3 [TASK] Ensure using symfony container in tests (thanks to Oliver Bartsch)
• 2024-02-23 a7a46a0975 [BUGFIX] Prevent PHP deprecation in getCookieName() (thanks to Oliver Bartsch)
• 2024-02-23 93b77f6d32 [BUGFIX] Allow TCA resultArray modification via CustomFileControlsEvent (thanks to Benjamin Franzke)
• 2024-02-23 5af0755375 [BUGFIX] Preserve ordering of prefixed CKEditor5 CSS stylesheets (thanks to Benjamin Franzke)
• 2024-02-22 a868e52d2b [BUGFIX] Prevent possible browser freezes in FormEditor (thanks to Benjamin Franzke)
• 2024-02-22 46037481f1 [TASK] Prevent undefined encryptionKey in tests (thanks to Torben Hansen)
• 2024-02-22 faa4d2b0a1 [TASK] Use correct command dispatch in runTests.sh (thanks to Stefan Bürk)
• 2024-02-21 ddf8ae50a0 [TASK] Show sender email address for mailtest in ext:install (thanks to Torben Hansen)
• 2024-02-21 788e95935d [TASK] Add better PHPStan annotation for method getRepositoryClassName (thanks to sschreiberten)
• 2024-02-21 9d914dcb57 [BUGFIX] Avoid broken treelist cache (thanks to Sascha Nowak)
• 2024-02-20 05037e0b50 [TASK] Prevent password policy warning in BackendUserPasswordCheck (thanks to Torben Hansen)
• 2024-02-20 2feda60242 [BUGFIX] EXT:workspaces: Use locallang keys in modal windows (thanks to Andreas Kienast)
• 2024-02-20 983b716347 [TASK] Use first class closures for service provider factories (thanks to Benjamin Franzke)
• 2024-02-19 045f87ef50 [BUGFIX] Prevent drop down menus in docheader from being cut off (thanks to Oliver Bartsch)
• 2024-02-19 effbd5b438 [DOCS] Update CKEditor5 CSS styling limitations section (thanks to Benjamin Franzke)
• 2024-02-19 5645bf007c [BUGFIX] Remove outdated comment regarding capitalWords in f:format.case (thanks to Andreas Kienast)
• 2024-02-19 476b197d88 [BUGFIX] Add font plugin to CKEditor5 (thanks to Johannes Nielsen)
• 2024-02-17 8a4b1e19a0 [TASK] Update container image versions (thanks to Stefan Bürk)
• 2024-02-17 3710319925 [TASK] Enable tablecaption in CKEditor5 (thanks to Benjamin Franzke)
• 2024-02-16 41668d041b [BUGFIX] Prevent TypeError in file related webhook messages (thanks to Oliver Bartsch)
• 2024-02-16 0882218a8c [BUGFIX] Load backend.form imports in Site Configuration form (thanks to Andreas Kienast)
• 2024-02-16 ef654cc069 [BUGFIX] Provide pid to BackendUtility::getProcessedValue() (thanks to Oliver Bartsch)
• 2024-02-15 a1424c6bc9 [TASK] Stop runtime caching GU::trimExplode() in DH (thanks to Christian Kuhn)
• 2024-02-15 7ed23d5439 [BUGFIX] Use form-select for EXT:form "version2" select elements (thanks to Oliver Bartsch)
• 2024-02-15 76bba45a05 [BUGFIX] Add missing quotes to image processing suggestion (thanks to Torben Hansen)
• 2024-02-14 f872dc1b13 [BUGFIX] Do not reset items per page on search (thanks to Oliver Bartsch)
• 2024-02-14 6208b54f91 [BUGFIX] Fix mixed up $cachingEnabled property in BootCompletedEvent (thanks to Nikita Hovratov)
• 2024-02-14 29537318a3 [BUGFIX] Respect TCA type group as foreign_selector (thanks to Oliver Bartsch)
• 2024-02-13 84be96cfff [TASK] Update ckeditor5 to v41.1 (thanks to Andreas Kienast)
• 2024-02-13 88c15bc17e [BUGFIX] Ensure correct custom (sub)category handling in ConstantEditor (thanks to Stefan Bürk)
• 2024-02-13 5ab9112b38 [TASK] Set TYPO3 version to 12.4.12-dev (thanks to Oliver Hader)