Favourite filters REST Resource is needlessly retrieving subscriptions on Issue Navigator

When you browse to Issue Navigator, JIRA will throw a REST call to retrieve the subscription details of every favorite filter that you might have.

Environment

JIRA 6.4.11

Steps to Reproduce

1. Login to JIRA
2. Create and subscribe into a few more filters (optional)
3. Navigate to Issue Navigator page

Expected Results

JIRA will not try to retrieve the subscription details of your favorite filters; Issue Navigator will be displayed as usual.

Actual Results

JIRA will call for rest/api/2/filter/favourite?expand=subscriptions[-5:]&_=1406622755881 and retrieve the subscription details of every favorite filter that you might have. On first access, it adds 2.7s load time to open Issue Navigator page. This adds a lot of overhead and the information is not used anywhere on the screen when you first open it.

Notes

This could be removed to improve page load times.

Workaround

No available workaround.