I have a garage, and I already knew that garages don't have hangar bays (why?!), but when I arrived at my garage today, I noticed in the room map that it had a hangar bay room!
To test this phenomenon, I attempted to dock my overracer speeder bike (4 sensors, woot!) into my garage, with no success. I double checked the rules to make sure my speeder bike would even fit, and it would if I could dock. And I also checked to see if there was stuff already filling up my garage's volume capacity, and it was totally empty.
My only explanation is that the garage perhaps had a hangar bay at one time, but it was removed (why?!), but the room map wasn't updated to this change. Can there be some clarification of this strange occurrence?