An observing service can bring down an acting service, only if the acting service's logic is added via a plugin.

[jimimatrix]

I found an odd scenario: an observing service can crash and bring down an 'acting' service, but only when the acting service's logic is added via a plugin. In the following code, and observing service sets up {model: observe} for a pin. 2 different acting services (actor-with-plugin.js and actor-without-plugin.js) run the same 'seneca.act' code, but one does so as a plugin and the other does not. When observer.js throws an error, actor-with-plugin.js crashes, but actor-without-plugin.js does not. I would not have expected that an error in the observer would bring down an acting service. Even more bizarre is that the acting service cares that there is an observer at all! (ie I expect {model: observe} to be: fire-and-don't-care)

https://github.com/jimimatrix/seneca-mesh-plugin-target-issue