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Synced patterns fail to preview in block editor

Gutenberg synced patterns and global blocks fail to preview in the editor with a JavaScript error.

Tier II · Emerging Problems that are still building up.

4 public reports · first reported 29 July 2026 · last reported 14 August 2026

Idea report · $9 · No contacts · All sales final

See a sample idea report

What's going wrong

Several site owners report that after the plugin is active, synced and global patterns show an error instead of a preview in the block editor.

AI-assisted: written with the help of AI from the reports. The idea report has the full summary.

In the idea report

  • The full summary.
  • The products the 4 reports are about, and how many came each month.
  • Related problems.

No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.