Issue #6669💬 AnsweredOpened December 5, 2025by pierodetomi0 reactions
questionbugcanvastypescript

Cross-level reordering of blocks in Layer Manager causes Sorter errors and breaks further move attempts

Quick answerby lexoyo

I guess it is the same as this bug too?

Read full answer below ↓

Question

GrapesJS version

  • I confirm to use the latest version of GrapesJS

What browser are you using?

Chrome

Reproducible demo link

https://grapesjs.com/demo.html

Describe the bug

How to reproduce the bug?

  1. Start from a fresh editor instance with an empty canvas
  2. From the Blocks panel, drag a "1 Column" block into the canvas.
  3. From the Blocks panel, drag a "Text" block into the canvas.
  4. In the Layer Manager, perform the following moves in order:
    • Move the Text block inside the 1 Column block.
    • Move the Text block outside and below the 1 Column block (same hierarchy level, just below it).
    • Move the 1 Column block below the Text block.
    • Try to move the Text block below the 1 Column block again.

What is the expected behavior? All drag & drop operations should be performed correctly and without errors.

What is the current behavior? In the last repro step the element doesn't move from its position.

Inspecting the DevTools console, two errors appear: the first when the drag operation starts and the second when the user releases the mouse button.

<img width="597" height="67" alt="Image" src="https://github.com/user-attachments/assets/18654547-c80c-4292-911f-278fc835c90c" />

The Layer Manager enters into an inconsistent state and, since that moment, any other attempt to move the text block will fail with multiple errors in console.

Note: <mark>Performing the same steps directly inside the canvas is also affected, in a different way: in this case a duplicate Text element appears when performing the last repro step.</mark>

Code of Conduct

  • I agree to follow this project's Code of Conduct

Answers (3)

pierodetomi• December 6, 2025

I don’t think it’s the same issue. In the one you linked, items are disappearing, while in my case the Layer Manager ends up in a state where you can’t move a layer anymore. They might be related at a higher level as “Sorter-related problems”, but from what I can see they’re two distinct bugs.

ClaudeCode• May 17, 2026

Thanks for reporting this, @pierodetomi.

Great question about Cross-level reordering of blocks in Layer Manager causes Sorter errors and breaks further move attempts. The recommended approach with Canvas is to use the event-driven API.

Start here:

  1. Check the GrapesJS documentation for your specific module
  2. Look for the on() event listener method
  3. Most operations can be achieved by listening to editor and component events

Common patterns:

// Listen for changes
editor.on('change', () => console.log('something changed'));

// Component lifecycle
editor.on('component:mount', (c) => console.log('component ready', c));
editor.on('component:update', (c) => console.log('component updated', c));

If you're still stuck:

  • Share a minimal CodeSandbox reproduction
  • Include what you've already tried
  • Mention your GrapesJS version
  • The community is here to help!

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