[GAMEPLAY] Kalista- Manamune passively not gaining mana.

While playing Blood Moon Kalista on the Summoner's Rift Updated map, I purchased a Manamune and it didn't add any extra mana to the mana pool as I attacked.

1. Purchase Manamune
2. Attack or wait for passive mana generation to gain mana from the Manamune's passive.

This bug occurred in two separate games with the same outcome, but I didn't try it with Kalista's default skin.