Octavia bugged since her release (March 24th, 2017)! I remember when Octavia was just released, her Mallet+Resonator combo was useless and doesn't deal any damage but after seeing this post on reddit I decided to test her 1+2. Mallet+Resonator combo actually quite capable of dealing a lot of damage, especially to non-armored enemies. However this combo doesn't work at all when playing as Client.