I have two canvases where I am making an object on one canvas and cloning it to another for further use. I am achieving this by using

var cloned_rect = fabric.util.object.clone(clone_rect);

After cloning the cloned object on the target object has it's controls messed up. Also I have transparentCorners: false on the source canvas, that is disabled after cloning.

I have recreated the problem in this jsFidde.