I opened the back hatch of my 2024 Subaru Forester to retrieve an item. I then pressed the button to close the hatch. It was an extremely windy day and right when I pressed the button to close the hatch an empty grocery bag blew out of the car. I caught it and shoved it back into the car. The hatch was closing at the time and it struck me on the head. I contacted a local Subaru dealer and Subaru corporate to confirm that the hatch was supposed to stop and reverse when encountering an obstruction. It did not. I have been suffering from a severe headache since this happened a week ago. I will be taking my car in to have it repaired as well as seeing a doctor since my headache has not resolved. Please investigate and ensure this safety issue is corrected by Subaru.