Ruby Shoes - Subpane窗口中的滚动条

我似乎无法让滚动条在内部堆栈/流程中工作.有谁知道怎么做？

只需修复高度并添加":scroll => true"参数:

Shoes.app(:title => "Scrolll!" ) do
  flow :margin => 10 do
    stack :width => "150px", :height => "200px", :scroll => true do
      para  "all you need is love",  "all you need is love", "all you need is love", "all you need is love", "all you need is love", "all you need is love", "all you need is love", "all you need is love", "all you need is love", "all you need is love",
    end
  end
end