The assign scopes modal does not allow scrolling if taller than viewport

1. Navigate to OAuth2 application > Edit > Scopes
2. Locate a scope on the "Resource scopes" tab which shows the hyperlink similar to "This resource scope CAN/MUST be assigned via a global scope"
3. Click hyperlink to render the modal
4. Expand the panels on the model until the modal's height is larger than the browser viewport

 Expected: You are able to scroll all the modal's content into view

 Actual: No scrolling is possible