'Switch' Element Cannot be Defaulted to "On" within MB Group "Clones"

Hi there,
I believe that the Switch custom field element when used as MB Group subfield cannot be set to the default "On" status when "cloned".

When a MB Group subfield Switch element uses the 'std' => true, attribute the FIRST subfield group element respects the attribute and the default "On" status is set. Subsequent MB Group subfield clones DO NOT respect the 'std' => true, attribute.

To Re-Create:
=============

1) Create a new 'type' => 'group', custom field ensuring that 'clone' => true, is set.
2) Add some sub-fields ensuring that you include the following Switch element within them:

[
'id'        => 'enable_switch',
'name'.     => 'Enable This',
'type'      => 'switch',
'style'     => 'square',
'on_label'  => 'Enabled',
'off_label' => 'Disabled',
'std'   => true, // Default On
],

3) Test the new group subfields clone creation and observe the switch status.

I can confirm that...

1) The issue is present in both a MB Frontend Submission Form and in the WP-ADMIN when creating group clones.
2) The issue is present with either 'clone_empty_start' => true, OR 'clone_empty_start' => false, within the group settings.

Q) Is this expected behaviour?
Q) Can you also re-create this scenario?

I look forward to your response.