From the documentation:
To change the Now time marker behavior
On the Track view Options menu, clear the On Stop, Rewind to Now Marker option to have the Now time marker move to follow the current Now time when you stop playback.
Or
On the Track view Options menu, select the On Stop, Rewind to Now Marker option to have the Now time snap back to the Now time marker when you stop playback.
Does this fix it for you?
Bob Bone