why does the ethernet-master interface show up on the OSPF interface screen when this interface is not defined as a OSPF network?

interface 3 - 10.0.0.2/30 network 10.0.0.0
interface 4 - 10.0.0.5/30 network 10.0.0.4
interface 2 - 192.168.88.1/24 - NA not assign to ospf

it also states that interface is connected to the ospf backbone

why

What do you have defined under OSPF Networks? Is it showing up as a dynamic "D" entry?

Yes it is dynamic for interface-2-master