Missing grenades and Molotov cocktail (Mafia 3)

After losing the second district Cassandra (already had Vito 4, Burke 2) somehow disappeared from the Arsenal of grenades and Molotov cocktails. Lost and icons these types clicking the select button grant/cocktails. It remains only C4 and dolls. Call the gunsmith, I want to buy, but already there is max. Who faced with similar? What to do? Prompt.