closes #3680

public/src/client/topic.js

@@ -87,6 +87,7 @@ define('forum/topic', [
 	}
 
 	function onKeyDown(ev) {
+		if (ev.target.nodeName === 'BODY') {
 			if (ev.which === 36) { // home key
 				Topic.toTop();
 				return false;
@@ -95,6 +96,7 @@ define('forum/topic', [
 				return false;
 			}
 		}
+	}
 
 	function handleTopicSearch() {
 		require(['search', 'mousetrap'], function(search, Mousetrap) {