When I view a requirement in a drawer, I cannot see estimates (when using capacity planning). When I view a feature in a drawer and expand a requirement to view it's details, however, I can see the estimate.
To view requirements in drawer, create a report list with requirements as the primary data type. Using reference number or requirement name, open the drawer.
Thanks for the idea!
With the recent improvements to drawer and details pages, estimates not appear in requirements drawers.