Does this only occur with your static mesh or have you been able to reproduce this with other meshes? I am attempting to reproduce it on our end to see if it is a bug, however I have been unable to thus far. Here is a link to the FBX content pipeline which may provide further assistance to you:
Yes, when using the white material it has the same result. However when, if this means anything, when I originally import my model the shadow is all blocky and messed up. If I hit “simulate physics” the shadow looks like it coming from the bowl, however the weird overlapping shadow things (which is show in the above posts) occurs.
I tired it with another mesh and the problem did not occur. However, the blocky shadows were only create by the sun and not by other light sources. Also, when I use a light other than the sun, the problem still occurs when I try and simulate physics and move away from the bowl.