Latitude e7x70, req. recovery key when connected to dock

We've got several Dell latitude e7270 (BIOS 01.07.03). These machines will require the recovery key when they are connected to a Dell dock. Every. Time.

Even after we've done the "suspend protection" and re-enabled it, it still requires the bit key.

Anyone else having this problem?

Saw a similar post about this, but the solution to that was the newest BIOS, 1.2.0 fixed it, but we're still experiencing it.

Thanks.