Issue Summary

When adding Jira Issues Calendar on a Jira Dashboard as a gadget and configure it, the tooltip info are being displayed on a transparent panel when hovering the mouse over them.

Steps to Reproduce

1. Create a Jira Dashboard.
2. Add "Jira Issues Calendar" gadget.
3. Configure the gadget to display project versions.

Expected Results

• When hovering the mouse over the releases, the tooltip shouldn't be transparent

Actual Results

• The tooltip info from the releases are being displayed on a transparent panel when hovering the mouse over them:
  

Workaround

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