Using Jira Service Desk 3.13.1 and Jira Core 7.10.1 linked to a Confluence 6.6.1 Knowledge Base, when a customer types into the "What do you need help with" search box a list of linked Knowledge Base item correctly appears - if the user clicks on that item it is opened with a link like this:
http://www.server:8080/servicedesk/customer/kb/view/7078112?q=install&q_time=1529771458452&portalId=2&applicationId=652998e3-913d-3e5d-a8bb-0583473258c5
All of that is good - now however, there is also a "Back to results" link on the page that is opened like this:
http://www.server:8080/servicedesk/customer/portal/2?q=install&q_time=1529771458452
Clicking that link does nothing - in fact clicking the "Back" button in the browser does nothing, and even if you go back to the portal home page directly e.g. http://www.server:8080/servicedesk/customer/portal/2 you are forced to log back on.
This particular help desk is configured to allow anonymous users to register with their email address, but I also tried turning off that option and the problem is still happening. Also Tried newest versions of Firefox/Chrome/Edge (on Windows) and none work; this is a pretty basic failure and makes the Help Desk almost unusable - anybody else experiencing similar issues?