Issue Summary

When adding external gadget "Filter Results" from Jira 8.22.0 in Confluence - it is showing only 3 issues and there is no configuration menu available.

When same Confluence instance is connected to Jira 8.20.6, gadget is working as expected

(tested with Confluence 7.15.0)

This is reproducible on Data Center: (yes) 

Steps to Reproduce

1. Install Jira 8.22.0
2. Install Confluence 7.15.0
3. Setup External Gadgets in Confluence by adding Gadget Feed URL to Jira 8.22.0
4. Create new page in Confluence, click +>Other Macro>Filter results. Configure gadget to show Number of Results = 10, add gadget and click Update

Expected Results

Gadget should be showing 10 tickets per page, have page selector and gear icon in the bottom: 

Actual Results

Gadget is showing only 3 issues and there is no gear icon for config menu:

Workaround

1. Stop jira
2. Move <JIRA_INSTALL>/atlassian-jira/WEB-INF/atlassian-bundled-plugins/jira-gadgets-plugin-8.22.0.jar to another (backup) directory
3. Download and copy jira-gadgets-plugin-8.20.6.jarinto <JIRA_INSTALL>/atlassian-jira/WEB-INF/atlassian-bundled-plugins/
4. Start Jira

 It's not clear what is the other potential impact of this WA