Changing state to a Call Activity has error when creating EntityLinks

We have encountered an issue with changing process state to a Call Activity when "enableEntityLinks" is set to false. The error occurs at org.flowable.engine.impl.dynamic.AbstractDynamicStateManager:createCallActivityInstance line:969

`ExecutionEntity subProcessInstance = executionEntityManager.createSubprocessInstance(subProcessDefinition, parentExecution, businessKey, initialActivityId);
EntityLinkUtil.createEntityLinks(parentExecution.getProcessInstanceId(), parentExecution.getId(), callActivity.getId(),
subProcessInstance.getId(), ScopeTypes.BPMN);
CommandContextUtil.getActivityInstanceEntityManager(commandContext).recordSubProcessInstanceStart(parentExecution, subProcessInstance);
`

It appears that a check of "enableEntityLinks" is required before calling "createEntityLinks".

This issue affects version 6.8 of the Flowable engine.