Merge pull request #1591 from lwyj123/1534

fix #1534

src/components/base/popper.js

@@ -55,7 +55,6 @@ export default {
         visible(val) {
             if (val) {
                 this.updatePopper();
-                this.$emit('on-popper-show');
             } else {
                 this.destroyPopper();
                 this.$emit('on-popper-hide');

src/components/form/form-item.vue

@@ -177,6 +177,7 @@
 
                     callback(this.validateMessage);
                 });
+                this.validateDisabled = false;
             },
             resetField () {
                 this.validateState = '';