Important: #98484 - Extensions outside of document root for Composer-based TYPO3 installations

See forge#98484


TYPO3 v12 requires the Composer plugin typo3/cms-composer-installers with v5, which automatically installs extensions into Composer's vendor/ directory, just like any other regular dependency.

However, in order to allow linking and rendering assets in the public web folder, the TYPO3 installation symlinks public folders to a specific location. For more details and the background about the change, read more:

Please note that this only affects TYPO3 installations in Composer mode.