Jira URLS are not correct

When opening a JIRA issue link from the commit pages, the text is displayed however all images and 'View in JIRA' urls are incorrect as they are missing the port number. e.g. https:
servername/browse/XXX-000 instead of https:
servername:8443/browse/XXX-000

Both Jira and Stash are running over HTTPS and because of JIRA permissions outgoing authentication in stash is basic authentication

The link to the JIRA issue from the commits page appears to be correct, it is the pop up that is incorrect