[CLIENT] Counted as leave even though i reconnected

I played a Nexus Blitz game and i didn't connect into the game immediately. I joined the game 3 minutes late but i continued playing for the rest of the 14 minute game. We won the game however i was counted as a Leaver, got a D- and didn't get any xp, didn't progress in missions etc. Additionally, the only reason i connected late was because i didn't know i wasn't loading into the game. I was 100% and the green loading bar at the bottom right was spinning. This has happened a few times before, not knowing if i'm loaded in the game or not. Maybe i'm wrong and this is just how it works, but seems frustrating nonetheless.