Matrix field that has a :relation type that is multiple does not save properly

[kwyoung11]

Matrix fields with relation sub fields that allow multiple values do not seem to be working properly.

Create a Relation, for e.g.

class Note < PushType::Node
  has_child_nodes :false

  field :content, :wysiwyg
end

class Klass < PushType::Node
  has_child_nodes :false

  field :notes, :matrix do
    field :note_ids, :relation, multiple: true
  end
end

STR:

1. Go to CMS.
2. Create multiple different Note objects and give them whatever content you like
3. Create a new Klass object
4. Add a Note object to the first row in the matrix
5. Click "+Add row" to add a new row to the matrix
6. Add another Note object to the newly added row (the second row)
7. Publish the Node

Expected behavior:
Note objects remain in their prescribed rows in the matrix

Actual behavior:
The second note object from the second row moves up to the first row, and the second row in the matrix becomes blank