When having multiple containers inside the same screen, then on design mode selecting an element wil

I have a screen with many levels of containers as follow:-

and each container contain a set on containers as follow:-

now the problem i am facing is that on design mode when i select an element, it will not be shown inside the screen, as follow:-

also when select an icon (which is Add icon) >> an area will be selected and not the icon itself ,as follow:-

so seems the design mode can not handle those containers? any way to fix this?