activiti5.18 默认查询的sql生成两个order by

<spring.version>4.2.4.RELEASE</spring.version>

<activiti.version>5.18.0</activiti.version>

<dependency>
   <groupId>org.mybatis</groupId>
   <artifactId>mybatis</artifactId>
   <version>3.2.8</version>
</dependency>
<dependency>
   <groupId>org.mybatis</groupId>
   <artifactId>mybatis-spring</artifactId>
   <version>1.2.3</version>
</dependency>
<dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <version>8.0.13</version>
</dependency>