The answer to Question 1 ‘what problem isn’t caused by unconscious bias?’ is ‘slow decision making‘, in fact, decisions made using unconscious bias tend to be very quick.
One way of subverting this process is to approach tasks more slowly and analyse your reasons for thinking and acting as you do. Faulty decision making and an unhappy workforce sadly can both be the result of unconscious bias in the workplace.
The answer to Question 2 ‘what can influence and trigger unconscious bias?’ is ‘background, cultural environment and personal experiences‘. Since unconscious bias can be made worse by stress, illness or anything that reduces cognitive capacity, regular exercise and a good night’s sleep are actually good ways of mitigating the impact of unconscious bias.