Editconfig listeners of nested components do not fire correctly

Summary

Example setup: I have two very simple components, components A and B. Component A contains 3 instances of component B. Component A uses a _cq_template to set some default properties for it and its children when it is dragged onto a parsys.

Issue: When a user drags component A onto a parsys, I expect the cq:listeners in its _cq_editConfig to fire, and they do not. The listeners do fire for the last the instance of component B, but not all of them nor for component A. In addition to that, when I drag component A into a parsys, it does not allow me to edit it (there is no blue border around it when I place my mouse cursor over it). This is also the case for the B components, with the exception of the one who's editConfig listeners fired.

How to reproduce

In order to reproduce this issue, create two simple components as described (one of them must contain instances of the other, and they must use cq:template to set default values). Dragging your component into a parsys will demonstrate the issue as described above.