Cancel running timer for tooltips with delayed show, but instant hide. This prevents delayed tooltips from appearing if the mouse leaves the elements before tooltip is showed and the hiding delay is 0.

js/bootstrap-tooltip.js

@@ -84,6 +84,7 @@
   , leave: function (e) {
       var self = $(e.currentTarget)[this.type](this._options).data(this.type)
 
+      if (this.timeout) clearTimeout(this.timeout)
       if (!self.options.delay || !self.options.delay.hide) return self.hide()
 
       clearTimeout(this.timeout)
@@ -272,4 +273,4 @@
   , delay: 0
   }
 
-}(window.jQuery);
+}(window.jQuery);