fix #675

src/components/table/table.vue

@@ -274,6 +274,11 @@
             loadData: {
                 type: Function
             },
+            // 4.4.0
+            updateShowChildren: {
+                type: Boolean,
+                default: false
+            },
             // 4.1.0
             contextMenu: {
                 type: Boolean,
@@ -851,7 +856,8 @@
 
                 data._isShowChildren = !data._isShowChildren;
                 // 由于 updateDataStatus 是基于原数据修改，导致单选、多选等状态重置，所以暂不处理 _showChildren 状态，而是通过事件 @on-expand-tree
-                // this.updateDataStatus(rowKey, '_showChildren', data._isShowChildren);
+                // #675，增加 updateShowChildren
+                if (this.updateShowChildren) this.updateDataStatus(rowKey, '_showChildren', data._isShowChildren);
                 this.$emit('on-expand-tree', rowKey, data._isShowChildren);
             },
             /**