Jenkinsfile parallel stages - One Says Paused While Running

I have a Jenkinsfile which has the following section:

parallel {
    stage('Tests 1') {
        agent any
        steps {
            sh "bash do_tests_1.sh"
        }
    }
    stage('Tests 2') {
        agent any
        steps {
            sh "bash do_tests_2.sh"
        }
    }
}

Everything is running, and the parallel jobs run simultaneously as they are supposed to, but the problem is that in the pipeline dashboard for the build, the job Tests 2 runs with a progress bar and then says complete, but Tests 1 says paused and does not have a progress bar even though I can see that it is running in the console logs.

Is there something special that would have to be done for Tests 1 to have a status bar and say running? Am I doing something wrong?