Button warning from Unknown Port / Old Source?

[nzoschke]

A followup from https://github.com/baaahs/sparklemotion/pull/473#issuecomment-1207467997

Some shaders on a fresh show show a warning in the button.

I still am not sure where to find the warning message. However it's suspected its due to Ports. Looking in there I see "Unknown Port / Old Source" on the shaders with the warning.