Thumb Mouse Button always bound to Heavy Attack

Game mode: [Enter game mode here: (Online official )]
Type of issue: [Enter one of the following: C Bug]
Server type: [Enter one of the following: PvE]
Region: [Oceanic]


Thumb Mouse Button always bound to Heavy Attack
This is not shown in keybindings for heavy attack. When i bind crouch to thumb mouse button it crouches and attacks at same time.


Please provide a step-by-step process of how the bug can be reproduced. The more details you provide us with the easier it will be for us to find and fix the bug:

  1. Use Thumb Mouse Button without binding to anything.
  2. Use TMB to do a Heavy Attack.
  3. Assign Crouch to TMB
  4. Use TMB to Crouch AND Power attack

Did you try checking the input.ini and fixing it through that?

Of course not.

Is this one of those games where players have to fix the game themselves?