The open back window light comes on on my dash but the back window is not open. on 2002 Honda Civic Si

The red open window light on my dash flashes on and off continually. I had to switch the rear trunk light off to keep the light from being on continually. I can unlock the car with my key button but I must lock the car with the key on the driver side to lock the car.

Asked by for the 2002 Honda Civic Si
It could be a miss adjusted or defective back window switch that notifies the computer whether the back window is closed or open. Does the rear window/hatch close nice and snug or is there any play? If there is play then it needs to be adjusted.