I was trying to better my non-record breaking 1777m distance, but failed on this attempt. After a couple of adjustments to overcome low signal warnings, I decided it would be better to bring the drone home. On the return, about 1500m away @ 4m33s after take-off, total signal loss; no telemetry or live view. I shrugged and proceeded to wait for the RTH, assuming I'd hear the familiar sound soon enough; watching for the red status on the RC to return to green and video to reappear. Just over a minute later, and my signal returned, but the aircraft was still hovering where I'd lost signal. I guided it home myself and landed. I checked my settings before take off, return home altitude was correct - signal loss should "return to home" and smart return home was enabled. How come RTH was not automatic? If the signal hadn't returned after more than a few minutes, I would have used the RTH on my controller. Still, I am concerned that my drone could have just stayed hovering there, until 30% battery, and then just landed where it was.