Hey,
I'm using the new Matrix inside a stage of a declarative pipeline.
As requested, one of the stages inside is skipping 2/5 the axes combinations.
When I add a section of options to that stage that contains a "timeout" option, one of the two stages that were skipped is marked as "succeeded" with a green "V" on it.

Look at my hover on that stage, and the results down the page:

This is the code:

stage('Unit Tests') {
    when {
        beforeAgent true
        anyOf {
            environment name: 'PLATFORM', value: 'trusty'
            environment name: 'PLATFORM', value: 'xenial'
            environment name: 'PLATFORM', value: 'bionic'
        }
    }
    options {
        timeout(time:60, unit: 'MINUTES')
    }
    steps {
        sh "a build step..."
    }
}

To avoid this kind of weird error, I can set the timeout at the step scope, but this is less "declarative" and best practice than what I wanted.

Thanks!