Symptoms
DNS template was created using Plesk with two NS records.
When domain is created and DNS settings are applied, the second NS record is propagated to SOA instead of the first one.
Cause
The order of NS records’ taking to SOA depends on timestamp of the respective records. So the record which was created first will be propagated with higher priority.
Resolution
Recreate DNS template in Plesk and create NS records in the required order,