diff --git a/src/calendar/components/Month.js b/src/calendar/components/Month.js
index 2703fbec1..50280034f 100644
--- a/src/calendar/components/Month.js
+++ b/src/calendar/components/Month.js
@@ -90,11 +90,14 @@ export default createComponent({
     },
   },
 
-  mounted() {
-    this.height = this.$el.getBoundingClientRect().height;
-  },
-
   methods: {
+    getHeight() {
+      if (!this.height) {
+        this.height = this.$el.getBoundingClientRect().height;
+      }
+      return this.height;
+    },
+
     scrollIntoView() {
       if (this.showSubtitle) {
         this.$refs.days.scrollIntoView();
diff --git a/src/calendar/index.js b/src/calendar/index.js
index 1fa30530e..e05b3a13a 100644
--- a/src/calendar/index.js
+++ b/src/calendar/index.js
@@ -234,7 +234,7 @@ export default createComponent({
       const { body, months } = this.$refs;
       const top = getScrollTop(body);
       const bottom = top + this.bodyHeight;
-      const heights = months.map((item) => item.height);
+      const heights = months.map((item) => item.getHeight());
       const heightSum = heights.reduce((a, b) => a + b, 0);
 
       // iOS scroll bounce may exceed the range
diff --git a/src/image/index.js b/src/image/index.js
index 4f426b951..0b16ebb83 100644
--- a/src/image/index.js
+++ b/src/image/index.js
@@ -1,4 +1,4 @@
-import { createNamespace, isDef, addUnit } from '../utils';
+import { createNamespace, isDef, addUnit, inBrowser } from '../utils';
 import Icon from '../icon';
 
 const [createComponent, bem] = createNamespace('image');
@@ -69,7 +69,7 @@ export default createComponent({
   created() {
     const { $Lazyload } = this;
 
-    if ($Lazyload) {
+    if ($Lazyload && inBrowser) {
       $Lazyload.$on('loaded', this.onLazyLoaded);
       $Lazyload.$on('error', this.onLazyLoadError);
     }
diff --git a/src/picker/PickerColumn.js b/src/picker/PickerColumn.js
index e6a91317e..758558389 100644
--- a/src/picker/PickerColumn.js
+++ b/src/picker/PickerColumn.js
@@ -168,6 +168,7 @@ export default createComponent({
         return;
       }
 
+      this.transitionEndTrigger = null;
       this.duration = DEFAULT_DURATION;
       this.setIndex(index, true);
     },
diff --git a/src/utils/index.ts b/src/utils/index.ts
index feffd5dbf..83f5ff38b 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,9 +1,10 @@
-// import Vue from 'vue';
+import Vue from 'vue';
 
-// export { createNamespace } from './create';
+export { createNamespace } from './create';
 export { addUnit } from './format/unit';
 
-// export const isServer: boolean = Vue.prototype.$isServer;
+export const inBrowser = typeof window !== 'undefined';
+export const isServer: boolean = Vue.prototype.$isServer;
 
 // eslint-disable-next-line @typescript-eslint/no-empty-function
 export function noop() {}