Looks like a bug. Article::mText no more exist, fetch revision instead.

diff --git a/includes/Article.php b/includes/Article.php
index 8aff111..1b83657 100644 (file)
--- a/includes/Article.php
+++ b/includes/Article.php
@@ -523,7 +523,7 @@ class Article {
        function isRedirect( $text = false ) {
                if ( $text === false ) {
                        $this->loadContent();
-                       $titleObj = Title::newFromRedirect( $this->mText );
+                       $titleObj = Title::newFromRedirect( $this->fetchRevisionText() );
                } else {
                        $titleObj = Title::newFromRedirect( $text );
                }