Allies turn invisible[GAMEPLAY]

Ok, so I disconnected for a moment and died to a Shyvanna. It was one of those disconnects where you can see the damage done to you but you cant do anything. Then i disconnected full for less than a minute since i was still in my death timer state. I reconnected and my allies were invisible. I can see skills that weren't connected to them like a J4 flag or lucian's lasers but that was it. I could see enemies when they weren't in the fog of war. Also since i didn't have vision of my allies, when they went into the fog of war i couldn't see what they saw. This is the first time I saw it happen. I think the steps are:

1. start to lag heavily to the point that you see the disconnect sign but can still see your health bar go down.(by the way your health bar might need to go away completely before fully disconnecting)
2. disconnect completely while dead(by the way your health bar might need to go away completely before fully disconnecting, not sure)
3. reconnect while the screen is still gray
4. i guess that is it This is the first time i have seen it happen and frankly it might be really rare but i ended up losing a possibly winnable ranked game because of it. http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1756115643/37460620?tab=overview this is the link to the match history. i was yasuo.