Some events missing from Listeners Event list dropdown after Scriptrunner 5.4.45

"ServiceDeskCommentEvent" and a few other event types are missing from the list of available events since Scriptrunner version 5.4.47 and onwards, including the Jira 8/Service desk 4.0 versions of Scriptrunner.

If you install Scriptrunner 5.4.45 and then run this URL:

http://localhost:8080/rest/scriptrunner/latest/events?perRepo=false

Then install a Scriptrunner version between 5.4.47 and 5.5.0 (for Jira7 or Jira 8) you will see that there are less events in the newer versions and the "ServiceDeskCommentEvent" for example is missing