Suggested project name couldn't be displayed in entity links

After configuring Application link between Confluence and JIRA, when configuring Entity link between one space in Confluence to certain project in the suggested project name is empty.

Step to reproduce:

1. Configure Application Links between Confluence and JIRA.
2. Test whether the Application Link works, by inserting JIRA Issues Macro.
3. Configure Entity Links between one space to certain project. Accessible by navigating to Space Admin > Application Links.
4. Click Add and choose the Application Link.
5. Screen will prompt that will ask user to enter project name.
6. Type any project name, however the suggested project is not be able to display its name.