Error parsing enums with unknown substatements inside its values

Please consider the following YANG excerpt:

grouping gigabit-eth-mdix {
leaf mdix {

tailf:info "Configure MDIX mode";
mandatory true;
tailf:cli-suppress-no;

type enumeration {
enum normal

{ tailf:info "Set interface MDIX to Normal mode"; }

enum xover

{ tailf:info "Set interface MDIX to X-Over mode"; }

enum auto

{ tailf:info "Set interface MDIX to Automatic Detection mode"; }

}
}
}

When debugging what was being parsed, I encountered this problem:

All "tailf" statements (which are considered Unknown Statements) were at at the Leaf level. Although each enum value have a property for unknown statements aswell, they are all empty as you can see in the attached file.

I would expect that for this example, only

tailf:info "Configure MDIX mode";
tailf:cli-suppress-no;

should be considered unknown statements of "leaf mdix". The rest, should be inside the collection of unkown statements of its repective enum value IMO.