[GAMEPLAY] Le'Blanc invisible clone bug

While playing ranked, I experienced a bug with Le'Blanc on the enemy team. She spawned her clone on bot lane, and once it was finished it was not removed, but rather it was made invisible. You were able to ping the invisible clone, and she did show up on the minimap. The enemy team also mentioned later that the clone did give them vision of the surrounding area until Le'Blanc used her ultimate ability again. The invisible clone showed up for everyone in the team, so this was not an issue with my client either.

Giving permanent vision for potentially as long as Le'Blanc doesn't use her vision seems kind of game breaking, but I have no idea how it happened or how to reproduce it.