I have a shop with a Market with multiple countries setup.
When accessing the shop through the default domain (no Market mapped), If I try signing up as a new customer, it is created without any default address. 
However, if I access the shop through the Market url and I try signing up, the customer is created with a default address that only contains a random country (the first country of the Market country list, sorted alphabetically).
Is it possible to change this behaviour? Defaulting into a random country in the Market is quite inconvenient and seems like an unexpected bug. 
Thanks!