(def pipeline-def
`(
manualtrigger/wait-for-manual-trigger
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
some-step-that-does-nothing
))
causes

The oldstyle UI displays it correctly.