Currently, if an AudioNode has no inputs connected, any automations (or connections) to an AudioParam of the node is not processed. Thus, time never advances on the AudioParam, and any upstream graph connected to the AudioParam never gets pulled for data.
Created attachment 409382 [details]
Committed r267432: <https://trac.webkit.org/changeset/267432>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 409382 [details].