[Gameplay] Teemo and traps were revealed BUG

Playing on LofPK map. Near the end of the match I hid inside my minefield to slip past the enemy so as to win the game. As they walked by they were able to see all my mines as well as me even though I was stealthed and NONE of them had a true vision buff ( and true vision wards are obviously not usable on this map).

[zombie-brand-mindblown]

Downloaded replay agrees with what I saw.

[slayer-pantheon-thumbs]

My thoughts: Sona actually DID have an oracle's extract buff but a game bug prevented me and the replay from seeing it. Somehow?

[zombie-brand-facepalm]