用深拷贝试试：
rightClick(row, column, event) {
this.openDialog(row);
this.dialogFormVisible = true;
},
resetForm() {
this.$refs.ruleForm.resetFields();
},
openDialog(val) {
this.$nextTick(() => {
this.editForm = JSON.parse(JSON.stringify(val)); // 用深拷贝
});
},
生成头像