Ah ok, so there is a difference between sidebar, plugins and nodes (config & workspace)? But why does it show "0 plugins" at all, for example, tarball does not have a sidebar nor plugin and nothing is shown:
NodeDev has a plugin directory and in that directory there is a sidebar defined (which is also shown as a sidebar). In the package.json it's declared as a plugin but in fact there are two plugins defined - one is just init code.
Indeed registerPlugin isn't called by NodeDev, instead a RED.sidebar.addTab is called.
