grunt dist

dist/js/bootstrap.js

@@ -516,7 +516,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.transitioning = 1
 
     var complete = function (e) {
-      if (e && e.target != this.$element[0]) return
+      if (e && e.target != this.$element[0]) {
+        this.$element
+          .one($.support.transition.end, $.proxy(complete, this))
+        return
+      }
       this.$element
         .removeClass('collapsing')
         .addClass('collapse in')[dimension]('auto')
@@ -552,7 +556,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.transitioning = 1
 
     var complete = function (e) {
-      if (e && e.target != this.$element[0]) return
+      if (e && e.target != this.$element[0]) {
+        this.$element
+          .one($.support.transition.end, $.proxy(complete, this))
+        return
+      }
       this.transitioning = 0
       this.$element
         .trigger('hidden.bs.collapse')