Pipeline is skipping task when it shouldn't?

I have an Openshift/Tekton pipeline. I have a task that outputs a true/false passed result if certain tests pass:

apiVersion: tekton.dev/v1beta1kind: Taskmetadata:  name: test-repospec:  results:    - name: passed      type: string  steps:    - image: 'mcr.microsoft.com/powershell:latest'      name: repo-passed      script: |        #!/usr/bin/env pwsh        if (Run-Tests){          Set-Content -Path $(results.passed.path) -Value $true -Force        }

I have a second task that is supposed to run if the above task returns 'True', and a third task that outputs the passed result for debugging purposes:

apiVersion: tekton.dev/v1beta1kind: Pipelinemetadata:  name: my-pipelinespec:  tasks:    - name: test-repo-task      taskRef:        kind: Task        name: test-repo    - name: do-stuff      runAfter:        - test-repo-task      taskRef:        kind: Task        name: other-task      when:        - input: 'True'          operator: in          values:            - $(tasks.test-repo.results.passed)    - name: show-task-result      params:        - name: PS_COMMANDS          value: echo "$(tasks.test-repo-docs.results.passed)"        - name: PATH_CONTEXT          value: .        - name: POWERSHELL_IMAGE          value: mcr.microsoft.com/powershell:latest      runAfter:        - do-stuff      taskRef:        kind: ClusterTask        name: powershell

The show-task-result outputs True, but the do-stuff task is still skipping every time. I've tried changing the when condition to all lower case ('true'), I've also tried changing the value I output in the PowerShell script from a boolean ($true) to string ('true') but there was no difference.

I also tried swapping the when condition input/values:

when:  - input: $(tasks.test-repo.results.passed)    operator: in    values:      - 'true'

What am I doing wrong here?