I downloaded the latest version of Wrobot and have the global settings back to default and no plugins and the bot still does the same thing. It runs away from the target and acts like its going to shoot, but is unable because it says the target is not in front of me. I'm running the latest version of your vanilla beast mastery fight class. Also no wow addons.
Just fyi, it doesn't happen all the time. It only occurs when the bot completes the backtracking.