diff --git a/packages/uni-cli-shared/components/navigation-bar.vue b/packages/uni-cli-shared/components/navigation-bar.vue
index bca0e8ad50e6fbe29f052aa29b0e417ed7e97a29..15ece9737c1a124f9b3adea9204e478d2cfbd4bb 100644
--- a/packages/uni-cli-shared/components/navigation-bar.vue
+++ b/packages/uni-cli-shared/components/navigation-bar.vue
@@ -83,7 +83,8 @@ export default {
     }
   },
   created () {
-    const page = getCurrentPages()[0]
+    let pages = getCurrentPages()
+    let page = pages[pages.length - 1]
     this.$watch('title', () => {
       this.setNavigationBarTitle()
     })
diff --git a/src/core/view/components/canvas/index.vue b/src/core/view/components/canvas/index.vue
index c4c2e6547dfd735e0e28760f92d956e84b4d20ac..910d20c47fefa404ab7abdda2b3e3b2b2ac107a4 100644
--- a/src/core/view/components/canvas/index.vue
+++ b/src/core/view/components/canvas/index.vue
@@ -446,9 +446,10 @@ export default {
         }, this.$page.id)
         return
       }
-      if (!callbackId) {
+      if (!callbackId) {
+        // fix [...]展开TypedArray在低版本手机报错的问题，使用Array.prototype.slice
         return {
-          data: [...imgData.data],
+          data: Array.prototype.slice.call(imgData.data),
           width: destWidth,
           height: destHeight
         }
diff --git a/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js b/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js
index f463d15461abe6430456fb7505fa904280b6006c..32452fb09a403fd3faea21a4988d517c1963b5b2 100644
--- a/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js
+++ b/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js
@@ -36,7 +36,7 @@ class RewardedVideoAd {
       this._loadAd()
       this._dispatchEvent('close', { isEnded: e.isEnded })
     })
-    rewardAd.onVerify((e) => {
+    rewardAd.onVerify && rewardAd.onVerify((e) => {
       this._dispatchEvent('verify', { isValid: e.isValid })
     })
     rewardAd.onError((e) => {