Lucid Charts no longer working after Confluence's upgrade to 5.3-OD-8

Since the latest upgrade in Confluence OnDemand users are getting errors on pages with Lucid Charts.

Steps to reproduce:

1. Insert a LucidChart macro in a Confluence page and click the "Select or create LucidChart diagram" link.
2. After being redirected to LucidChart select your diagram.
3. Select the diagram, after being redirected back to Confluence the selected diagram is not displayed.

A fix is scheduled to be deployed on on Monday 28/Oct.