Support Behaviours in Jira Service Management#101

As a ScriptRunner Admin,
I would like to use behaviours in JSM,
So that it’s easy for my users/customers to provide all information needed

Pleaes comment with detailed use cases (or the impact of not supporting this) - they are very helpful!

We have a mix of JSM and JWM projects designed to work together, searching and linking issues in each other.
Having behaviours also in JSM allows to streamline the alignment of custom fields between interconnected projects.
As a starting point it would be enough to have the behaviour working in standard Jira web UI, and then if possible or needed extended to the Help portal too.

I have a specific use case where users submit issues in a service project and for a specific request type the Change Type field is set to a default value so I want to hide that field using Behaviours. I have the field marked as hidden in the request type form but since users submit issues in JSM instead of the portal the field is not hidden. I can’t use a Behaviour to hide the Change Type field because it is a service project field (as is Request Type which would be used in the if statement).