I lost a game against myself!

[Harti]

This is what I meant, the game list gets (almost) only updated when the server sends a push notification to the device, nor does the opened game ever update live (which would be a cool feature for the future, though, so that you can play "live" against people).
Meaning that you've got a game open containing an older game state, but the game on the server is already updated because somebody joined (but didn't yet submit their turn, so the server didn't push notify you yet). That is, the game actually contains two players now but the local game you've opened on your device still has one (you). If you now resign, you lose the game to the person joined because the resignation action will check back with the server. Talk about bad luck.

However, what's confusing me is the fact that it says you didn't in fact lose to another person but to yourself. This could be some messy data footprint sent by the server upon resignation, maybe it takes the local game data (which doesn't have a P2 so it'll display your name), and without a league and rank it could mean that an unranked player started his placement match (which then again makes me wonder why you lost points, but well whatever).