When you want to scroll through your recent chat messages or commands that you executed recently, you use the up arrow key. However, if you change the move forwards key under controls, you still need to use the up key to scroll through your recent chats/commands. This is especially annoying if you have a broken up arrow key on your keyboard. In my opinion, there needs to be another setting in the control settings called something like "recent chat key" where you can change this key apart from the walk forwards key.