Yesterday I completed the next-to-last episode race, and was sitting at level 19611. I have never started playing that level. I had a win streak of something like 597 levels. Tonight I got out of watching ads and looked at the new weekly contest leaderboard, and started looking at other player cards to see what they look like. Then I poked on my own to see how I compared, and noticed my streak had been reset to zero. You have to scroll way back to see anything other than golden crowns. So I guess it somehow thinks I failed level 19611. But I have never opened that level.
I know caring about a win streak is silly, but I was enjoying building it up. It's pretty frustrating when it goes away for absolutely no reason whatsoever. Very depressing.
I think maybe this happened to me once before many thousands of levels ago, but I had mostly gotten over it and forgotten about it. But somehow being at the end of the map, this hurts more.