Black screen when editing wp_navigation post type

  • evomentum
    May 29, 2026 at 12:13 am

    Hi,

    I’m using the Gutenberg Navigation block in my header and footer, both built with GP Premium Elements. The Navigation block has its own post type (wp_navigation) — separate from classic WordPress menus — where you can create and manage reusable navigation menus.

    Steps to reproduce

    1. Add a Navigation block to any page or template
    2. Open the Settings panel (gear icon, top right)
    3. Scroll to the <b>Advanced</b> section at the bottom
    4. Click <b>Manage menus</b> — this leads to /wp-admin/edit.php?post_type=wp_navigation
    5. Click <b>Edit</b> on any listed navigation — WordPress redirects to /wp-admin/site-editor.php?canvas=edit&p=%2Fwp_navigation%2F419
    6. Result: black screen with <i>”The theme you are currently using does not support this screen.”</i>

    With a block theme, step 6 opens the navigation post correctly in the Gutenberg editor. I’d expect the same behavior here — similar to how custom patterns open in the block editor regardless of theme.

    Setup:

    • GeneratePress 3.6.1 / GP Premium 2.5.5
    • GenerateBlocks 2.2.1 / GB Pro 2.5.0
    • Header and footer built via GP Premium Elements

    Is there a way to make wp_navigation posts editable under a classic theme setup? Or is this a bug in GP compatibility that could be addressed?

    Thanks

  • Alvind
    May 29, 2026 at 1:01 am

    Hi there,

    This is actually a WordPress limitation rather than a GeneratePress issue. What’s happening is that when you click the “Edit” link for a Navigation menu, WordPress tries to open it in the Site Editor. However, the Site Editor is designed to work only with block themes. Since GeneratePress is a classic theme, WordPress blocks access to that screen and displays a message saying the current theme is not supported.

    So this isn’t something GeneratePress is causing or controlling. Any classic theme would run into the same issue.

    By the way, you don’t need to use the Site Editor to edit the menu. Instead, open the Header or Footer Element where the Navigation block is being used, select the Navigation block, and edit the menu items directly there. The menu data is exactly the same.

    So while the “Edit” link currently leads to a dead end, you can still manage the menu normally from within the Block Editor. This issue would need to be addressed by the WordPress team, as both the Edit link behavior and the restriction originate from WordPress itself.

    Hope that helps!

  • evomentum
    May 29, 2026 at 3:12 am

    Ahh I see. Thanks for explaining!

  • Alvind
    May 31, 2026 at 6:18 pm

    No problem!

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