The next page of the parent menu displays the submenu

Problem/Motivation

1.The next page of the parent menu displays the submenu

Steps to reproduce

1. Add menu one and set Link to test
2. Add menu two and set Link to test. "parent link" is menu one
3. Access the page in the foreground and select menu two. The previous page displayed is the name of menu one

Proposed resolution

Introduce the patch of this issue https://www.drupal.org/project/drupal/issues/732370 → to fix the inability to obtain the bottom menu of drupal core. Then modify the code to replace the parent menu with the child menu

Remaining tasks

User interface changes

API changes

Data model changes