Okay it might just be really bad luck on my part, but this has happened to me only twice and both under same circumstances.

I lost rank 1 last time cause when I won a match and the enemy surrederd, it would then show im lagging and then I get defeat. And I just lost rank 1 again due to the same occurence. I know this does not only happen based on rating as I've seen on the forums it has happened for other ppl.

Quote from 3FFA

Yes happened to me three times with the old. After one my opponent said he/she was really sorry because it is a glitch. He apologized continuously, and was rated 1600 or so :(

Quote from Westwind

That almost happened to me in one of my games, I was like whaaat!? Hell no I should be seeing my Victory screen by now.
My counter went down to 2 seconds and thankfully the Victory screen came up. Man that glitch has to be fixed...

But I just find that it only happend to me two times BOTH of which when I was rank 1 and passing 2230 points or so. Just a theory. Welp, back on the grind to number 1.

Hmm must be my horrible luck and timing then.