I have a lightning component setup where in a parent component I dynamically create a component and assign it to an <aura:attribute type="Aura.Component" />. The dynamically created child component has an <aura:method /> on it. The controller action for that method does some DOM manipulation on a node inside the dynamically created component (this should be totally valid in Locker Service since we are accessing a DOM node inside the same component). However, getElement() is not available when the component was dynamically created. If I instead directly place the component inside the parent component with <c:myCmp /> when I call the same function getElement() is available.

Is there something special I need to do in order to make sure dynamically created components have getElement() available within their own controller code or is this simply a bug in Locker Service?

UPDATE - GIST

Here is a gist that will showcase the issue: https://gist.github.com/dsharrison/bf2ceaf22820bbfb79cef042fd2e5d8d

With Locker Service disabled, both buttons will report that getElement() is available. Once enabled, the dynamic button will lose access to getElement().