Deprecation: #85678 - config.titleTagFunction

See Issue #85678

Description

The TypoScript option config.titleTagFunction has been marked as deprecated and will be removed with TYPO3 v10.

Impact

Installations using the option will trigger a PHP E_USER_DEPRECATED error.

Affected Installations

Instances using the option.

Migration

Please use the new TitleTag API to alter the title tag.