It doesn’t usually take that much effort to make a new interactive appear if you are using an existing grouping like “samples.” Have you tried running guard in the top directory while developing? It should update the build with every save.
I’ve occasionally run into the problem you have mentioned, but it usually seemed to be one of two issues: I was accidentally working in the public directory rather than src or that I had a browser caching issue, which was cleared up by starting a new incognito session.
Given that make everything … fixed your issue I’m guessing its a browser caching thing. Either way making a new interactive, which not uncommon is not that frequent. I assume that once you have the new interactive showing up the updates you make show up immediately?