Gangplank Silver Serpents Bug After Re-connection

Hi, Riot. I was playing a game today as Gangplank. I had 500+ Silver Serpents before I was disconnected. Then my internet had a problem and I got dc. I re-connected back to the game very fast and I was dead. I checked my Silver Serpents and it was zero! I cannot upgrade my ult. But they were not gone. It was just displayed that there was no Silver Serpents. I used my Q and killed a minions later and my Silver Serpent came back from zero to 500+. Please fix this bug.