lustre/element fragment doesn't update child elements properly

[yoonthegoon]

Problem

When a fragment has child elements that are removed (like from a model being updated), those elements are not totally removed.

This is different from the behavior of a div.

Visual

Below is my initial state.

Containing everything will either be a div or fragment. In both scenarios, I remove the top transaction form.

div

fragment

As you can see, removing the top transaction form in a fragment leaves the total count of forms the same, simply duplicating the last form and associating those forms with the same transaction in my model.