Pro 7.8.10 — Cornerstone editor stuck on spinner for WordPress front page when Complianz is installed

Support
#1

Hi,

I’ve found a reproducible bug in Pro Theme 7.8.10 affecting the Cornerstone editor on the WordPress front page.

Symptom:The editor outline panel loads correctly, but the preview pane is permanently stuck on the loading spinner. The issue occurs only on whichever page is set as the WordPress front page — all other pages edit normally.

Confirmed on two separate sites:
Both sites have Complianz GDPR Premium installed. The bug does not appear on sites without Complianz.

Console error:

TypeError: Cannot read properties of undefined (reading 'data')
    at zUe (app.react18.7.8.10.js:149:1125)
    at HTMLDocument.<anonymous> (app.react18.7.8.10.js:149:3831)

Technical findings:

  • csAppData.use_late_data is true on the front page
  • The Cornerstone store initializes with only 1 element (the page itself)
  • The preview iframe src is never set — something in zUe crashes before the preview can initialize
  • The /themeco/data/document/{id} REST endpoint returns valid data (200 OK), so the data itself is not corrupted

Please let me know if a hotfix or workaround is available.