Black dot on Sprint Burndown Gadget

Issue Summary

After adding Sprint Burndown Gadget on a Jira dashboard or Confluence macro, it shows a black dot. There is no action when clicking on it. 

Observations:

• Black dot shows for both Standard and Free sites.
• Black dot shows for Classic and Next-gen projects
• Black dot does not show for other Sprint gadgets.

Steps to Reproduce

1. Add Sprint Burndown Gadget in a Dashboard.
2. Select a Board and save it.

Expected Results

It shows the Sprint Burndown Gadget normally with the data selected.

Actual Results

It shows a black dot on the bottom left.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available