fix: #8558, only navigate if user is in same topic

public/src/client/topic.js

@@ -21,14 +21,13 @@ define('forum/topic', [
 			clearTimeout(Topic.replaceURLTimeout);
 			Topic.replaceURLTimeout = 0;
 		}
+		events.removeListeners();
 
 		if (!String(data.url).startsWith('topic/')) {
 			navigator.disable();
 			components.get('navbar/title').find('span').text('').hide();
 			app.removeAlert('bookmark');
 
-			events.removeListeners();
-
 			require(['search'], function (search) {
 				if (search.topicDOM.active) {
 					search.topicDOM.end();

public/src/client/topic/events.js

@@ -83,14 +83,14 @@ define('forum/topic/events', [
 		}).html(data.post.bookmarks).attr('data-bookmarks', data.post.bookmarks);
 	}
 
-	function onTopicPurged() {
+	function onTopicPurged(data) {
-		if (ajaxify.data.category && ajaxify.data.category.slug) {
+		if (ajaxify.data.category && ajaxify.data.category.slug && parseInt(data.tid, 10) === parseInt(ajaxify.data.tid, 10)) {
 			ajaxify.go('category/' + ajaxify.data.category.slug, null, true);
 		}
 	}
 
 	function onTopicMoved(data) {
-		if (data && data.slug) {
+		if (data && data.slug && parseInt(data.tid, 10) === parseInt(ajaxify.data.tid, 10)) {
 			ajaxify.go('topic/' + data.slug, null, true);
 		}
 	}