$context->setUser( $user );
$context->setLanguage( $lang );
$teardown[] = function () use ( $context ) {
+ // Clear language conversion tables
+ $context->getLanguage()->getConverter()->reloadTables();
// Reset context to the restored globals
$context->setUser( $GLOBALS['wgUser'] );
$context->setLanguage( $GLOBALS['wgContLang'] );