Creating Comments using CommentManager fails

Hi DEV team.
I'm trying develop a service which create comments for issues.
I'm using Comment Manager.create(Issue issue, ApplicationUser author, String body, boolean dispatchEvent).

Regarding the stack trace below I got an error in class ImmutableGenericValue line 63 with UnsupportedOperationException because it will be checked if variable 'constructed' is set to false. So it is not possible to create comments using the CommentManager.

Kind regards,
Michael

Workflow Service [c.a.jira.service.ServiceRunner] An error occurred while trying to run service 'Workflow Service'. Cannot set or mutate an ImmutableGenericValue
java.lang.UnsupportedOperationException: Cannot set or mutate an ImmutableGenericValue
at com.atlassian.jira.util.ofbiz.ImmutableGenericValue.set(ImmutableGenericValue.java:63)
at org.ofbiz.core.entity.GenericEntity.set(GenericEntity.java:244)
at com.atlassian.jira.issue.IssueImpl.updateGV(IssueImpl.java:1186)
at com.atlassian.jira.issue.IssueImpl.setUpdated(IssueImpl.java:873)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:233)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:195)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:185)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:169)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:158)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:147)