Hi,
I have a group with the Collaborators role in Jira Service Management, and they seem to have an odd problem.
If they get a link to an issue, they are sent to the Jira front page instead of the issue.
Users with the Agent role don't have this problem.
The Collaborators can search and find the issue, but not use the link.
I can't see anything wrong with permissions. Do you really need to be an Agent for this to work?