Rengar bug

I was going top lane, and i accidentally disconnected for like 5 minutes because my router turned off. i came back on and had like 2500 gold, i had like 2000 before-hand. Right after I went to buy, and then bought stalker's blade with warrior because I forgot Garen was the jungler and I forgot I was top. so I went mid lane and realized the item dissapeared and recalled. it didn't give me back my money, then i realized i was top. it let me buy warrior for stalkers blade and yet i didnt have smite then it dissapeared from my inventory. i dont know what happened but we lost. without PS: If you wanna be specific on testing the bug, i had night hunter rengar skin so yeah. thx, NIGHTCORE