Movable Directional Light on Mobile is casting strange shadows

Please have a look at the attached picture.

I’ve setup a default Level with a Third Person Character and set the Directional Light’s Mobility to Movable. On the Mobile Preview there is a strange rectangular shadow that moves along with the character that I can’t get rid off.

Engine: 4.7.5 on OSX Yosemite.

Answering my own question:

Setting “Num Dynamic Shadow Cascades” to 2 got rid of those shadows on mobile!