Changelog:WHMCS V8.0.4
From WHMCS Documentation
Maintenance
CORE-15587 - Correct redirect for OpenID authorization
CORE-15608 - Prevent error on Compose for campaign associated with client group
CORE-15611 - Prevent erroneous validation error during cart creation of new account
CORE-15619 - Correct behavior for legacy method ClientArea::getUserID()
CORE-15633 - Prevent error on EmailPreSend abort
Modules
MODULE-7526 - Correct available variables for DomainSync function invocation