The Point light shadow bias problem has been a problem for a long time. It has been on the issue tracker for over 2 years and there has yet to even be a response to it.
Feel free to vote for it, hopefully it will get more visibility.
Does anyone know of anyway to get the point light shadow bias settings to work or of any other lighting solutions that allow them to work. All my objects appear as if they are floating above the ground due to the shadow bias, which makes using point light in my project fairly useless.