Zero Subtotal Checkout switch order to Complete status

[gorillagroup]

Steps to reproduce

1. Install Magento from 2.0.7 tag.
2. Set for Zero Subtotal Checkout New Order Status = Pending.

Expected result

1. New Order on Pending status

Actual result

1. Order in Complete status so no ability to create invoice or shipping
2. Sometimes I can see that order in Grid at Pending status but on Order view page status is complete.