Jira Issues and Comments components are blank and Create/Associate buttons are not available
When accessing a Salesforce Record, the Jira Issues and Comments components are shown blank. The usual Create/Associate buttons are also not available.
Any Connector for Salesforce & Jira version
Any Jira version
Using the browser developer tools (press F12), check the Console for any CORS-related error. For example:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at <salesforce_url>. (Reason: CORS header 'Access-Control-Allow-Origin' does not match '<salesforce_url>'.
The problem is caused by a Salesforce update called "Enable Secure Static Resources for Lightning Components". More information about this update can be found on the Salesforce site below:
As of this KB's creation (6th Sept 2021), Salesforce has postponed the update and has suggested not enabling it.
Disable the update with the steps below:
Navigate to Salesforce Setup > Release updates > Archived tab.
Look for Enable Secure Static Resources for Lightning Components.
Click View Update.
Then click Disable Test Run to disable it.
An example screenshot after disabling: