Spock Test with @Unroll Follow

I'm seeing an odd output from the JetBrains test runner when running a Spock test with the @Unroll annotation. Here's an example test:

import spock.lang.Specification
import spock.lang.Unroll

class NoNameSpec extends Specification {

    @Unroll
    void "test for noName"(String test, String transformed) {
        expect:
            transformed == test.toUpperCase()

        where:
            test || transformed
            'a'  || 'A'
            'b'  || 'B'
            'c'  || 'C'
    }
}

Here's what the test runner shows:

It's that <no name> entry that's bugging me.  When I run the same test in the Spock Web Console (http://meetspock.appspot.com/), I don't get that so I'm pretty sure this is an IDEA issue.

I'm running on a MacBook Pro:

IntelliJ IDEA 2016.2.1
Build #IU-162.1447.26, built on August 2, 2016
JRE: 1.8.0_76-release-b216 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o

Any ideas why that <no name> entry is showing up?