[GAMEPLAY] A long sword vanished from my inventory

I had a poacher's dirk and a long sword in my inventory, as well as other items, and the moment i farmed my 3rd ennemy jungle camp to evolve my poacher's dirk into a serrated dirk the long sword vanished from my inventory. It might be a bug due to the recipe of the serrated dirk including long swords but I'm not sure. Anyway, i linked the video of the replay, it happens at 24:42 exactly.