Fixed a balloon tooltip issue

diff --git a/wcfsetup/install/files/js/WCF.js b/wcfsetup/install/files/js/WCF.js
index 17bc50b4bd658f019af6c9f4fd68e34e793b0738..bd558cafcc2cd2e865db66105796cdcb5555fbfb 100644 (file)
--- a/wcfsetup/install/files/js/WCF.js
+++ b/wcfsetup/install/files/js/WCF.js
@@ -2911,6 +2911,12 @@ WCF.Effect.BalloonTooltip.prototype = {
                        left: "0px"
                });
                
+               // empty tooltip, skip
+               if (!$element.data('tooltip')) {
+                       this._tooltip.hide();
+                       return;
+               }
+               
                // update text
                this._tooltip.children('span:eq(0)').text($element.data('tooltip'));