Game disappeared, literally mid game disconnected (perfect connection), re-logged in and nothing

So I was in a game, like some good 10 minutes into the game... And suddenly I disconnected? While my internet was perfectly fine, when I try to reconnect, reset the game, etc... the game never happened? I got requeued, no loss of LP or match history, game literally just as if it never happened, it wasn't a remake since it was already like 10 minutes in, and it doesn't show as remake on anywhere, literally game just stopped existing...

Riot Green Teej was in this game, I'm curious what is this about? Since it never happened to me before in 4 years and I've never heard of it even when I'm on several discord servers with several players, access to over 1000 players and never heard of this.

Later on I looked on op.gg that as I was in champ select into a game it said I was live on a game, even my new "teammates" confirmed. After that game I tried to add some people from the old game and they told me exactly the same.

What the heck happened?