https://github.com/jenkinsci/blueocean-plugin/blob/master/blueocean-dashboard/src/main/js/components/Pipelines.jsx#L76

const showPipelineList = !this.pager.pending && pipelines && pipelines.length > 0;
const showEmptyState = !this.pager.pending && (!pipelines || !pipelines.length);

{ showEmptyState && <DashboardPlaceholder t={translate} /> }
{ showPipelineList &&
<main>
<article>
{ /* TODO: need to adjust Extensions to make store available */ }
<Extensions.Renderer
extensionPoint="jenkins.pipeline.list.top"
store={ this.context.store }
router={ this.context.router }
/>

The above prevents that the extension point "jenkins.pipeline.list.top" is rendered when no pipelines are there. However in my use case I want to render a navigation box but it has nothing to do with pipelines (not directly) so it should always show.

In case the point is that this extension point is thought to be only there in case pipeline exists, then IMO we need another extension renderer call outside.

REGRESSION because before we always rendered the extension point.