Why my project config sidebar disappeared after I click my web item link?

[mack_chen]

Hi All,
    Can you help me to resolve this question? I tried to add my item named 'Project Field Mapping' in project admin config section, after I click my item, project config sidebar disappeared! my vm file contains below meta:

<meta name="decorator" content="admin">
<meta name="admin.active.section" content="atl.jira.proj.config/projectgroup4"/>
<meta name="admin.active.tab" content="field-mapping-config-web-item-link"/>
<meta name="projectId" content="$projectId">
<meta name="projectKey" content="$projectKey">

[Brant Schroeder]

@mack_chen Welcome to the Atlassian community

The sidebar should collapse.  I am assuming it is working for the other pages properly.  You might be missing something on the page you created (JS or CSS) or what you created is causing the issue.  Have you inspected the page as it loads?