abnormal shoes behavior

[Joel Fernandes]

When I have 2 widget instances of the same class, on moving the first
one down relative to the other (using top and left), the height of the
second one increases.

Code to demonstrate:

class Mywidg < Widget
  def initialize
    self.width = 200
    self.height = 200
    background red
  end
end

Shoes.app do
   a = mywidg
   b = mywidg
   a.top = 100
   a.left = 100
end

Is this a known issue?

Thanks,
Joel