Temp file remaining at end of download

[Nick Payne]

Using GiP 2.92 on Windows. Every so often, when a download completes, 
and seems to complete successfully, I find that as well as the expected 
downloaded file, there is also what appears to be a temporary file of 
almost exactly the same size in the same output folder. For instance, I 
just downloaded episode 3 of The Game, and the output folder contains 
the files:

The_Game_Episode_3_b05vnkjw.mp4 - size 1,062,517,931 bytes

and

The_Game_Episode_3_b05vnkjw-temp-22211.mp4 - size 1,062,523,965 bytes

Both files have the same timestamp, and both play right through to the 
end without any problem. I just delete the version with temp in the 
filename, but any ideas on why this happens?

Nick