"No traces found" in Workflows' Traces menu

I enabled observability as described in the docs' OTEL Tracing page (https://mastra.ai/en/docs/observability/otel-tracing) and I can browse workflow traces in the Observability tab of the Mastra UI, but when I am looking at a specific workflow and I click the traces button at the top of the screen, it says "No traces found" I am under the impression that these two traces should represent the same thing – is this not the case? If so, how do I enable traces in the workflow tab as well?