修改分屏以后，别的选项卡内容消失

@@ -88,8 +88,8 @@
             <el-tab-pane
               :label="item.name"
               :name="item.value"
-              v-for="(item, index) in tabList"
-              :key="index"
+              v-for="item in tabList"
+              :key="item.value"
             >
             </el-tab-pane>
           </el-tabs>
@@ -272,16 +272,18 @@ export default {
           break;
         case "B2": //材料分屏按钮
           this.splitScreen = this.splitScreen ? false : true;
-          this.$store.dispatch("app/settScreen", this.splitScreen);
-          if (this.splitScreen) {
+          this.$store.dispatch("app/settScreen", this.splitScreen);          
+          if (this.splitScreen) {            
             //如果当前选项卡为材料信息内容，递减到上一个选项卡内容
             if (this.tabName == this.clxxTab.value) {
               this.tabName = this.tabList[this.clxxIndex - 1].value;
               this.getFromRouter(this.tabList[this.clxxIndex - 1].value);
             }
+            //删除材料信息选项卡数据
             this.tabList.splice(this.clxxIndex, 1);
           } else {
-            this.tabList.splice(this.clxxIndex, 1, this.clxxTab);
+             //新增材料信息选项卡数据
+            this.tabList.splice(this.clxxIndex, 0, this.clxxTab);
           }
           break;
         case "B4":