The fresh TYPO3 13 installation got UTF8filesystem = true from the core's
factory configuration; TYPO3 10 ran with the default false, so uploads
turned umlauts into ASCII (Bärenhütte.jpg -> Baerenhuette.jpg) and no file
in sys_file has a non-ASCII name. With true and no UTF-8 system locale,
escapeshellarg() drops those characters and image processing misses the
file (environment check warning). Back to false: the TYPO3 10 behaviour,
no locale needed, and file URLs and CDN paths stay free of encoded umlauts.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
frommeandClaude Opus 5.5
3c27cd84b9