Default generated categories TCA misses maxLevels configuration
The default generated TCA configuration by the CategoryRegistry does not set maxLevels value.
Because this is not set only 4 levels are shown but should be set to at least 99.
Same for the parent field of sys_category itself.
Updated by Frans Saris almost 10 years ago
The TCA settings done by the CategoryRegistry can not overruled easily as these are added after all TCA files (from TCA folders and ext_tables.php files) are loaded.
So when you want to override these settings you have to remove the table from "$GLOBALS['TYPO3_CONF_VARS']['SYS']['defaultCategorizedTables']" and add it your self again.