Works for most threads on Special:NewMessages on twn, but I have at least one thread which cannot be marked as read. The following error is thrown:
PHP Fatal error: Call to a member function getPrefixedText() on a non-object in /www/sandwiki/extensions/LiquidThreads/api/ApiThreadAction.php on line 65
Name of the thread is "Sidebar using UI language?"
Version: unspecified
Severity: major