Missing Jira Issue Type Icon n Confluence Page PDF Export containing JIRA Issue Macro

STEPS TO REPLICATE

1. Create Applink between Confluence 5.8.x and JIRA 7.1.7
2. Create several JIRA Issue type (Epic/Story/Bug/Task) in JIRA 7.1.7 (Bug seems not reproducible in Jira 6.3.x and 6.4.x) under same project
3. Create a page in Confluence and insert JIRA Issue Macro which will list all the JIRA issue in the project.
4. Save the page.
5. Export the page to PDF.

EXPECTED RESULT
All the JIRA Issue type icon (Epic/Story/Bug/Task) will show up in the PDF Export.

ACTUAL RESULT
JIRA Issue Type Icon missing in Confluence Page PDF Export. (Refer to attached image)

DIAGNOSIS
From the Confluence logs we can see that Confluence is reaching for the following URL to get the Icon:

WARN [http-nio-8090-exec-8] [confluence.extra.flyingpdf.ConfluenceExportUserAgent] getImageResource Could not retrieve image resource http://10.60.2.212:8080/jira717/secure/viewavatar?size=xsmall&avatarId=10307&avatarType=issuetype during Confluence export
 -- referer: http://10.60.2.212:8090/conf5814/display/TEST/test+jira+issue+pdf | url: /conf5814/spaces/flyingpdf/pdfpageexport.action | userName: admin | action: pdfpageexport | page: 6979586

However, from JIRA database, the following query shows that the URL for the Icon is different:

select iconurl from issuetype where pname = 'Epic' ;

"/images/icons/issuetypes/epic.svg"

NOTES
This bug only reproducible with JIRA 7.x.x (Tested with JIRA 7.1.7)