I have the same problem, the hierarchy view has disappeared and I have no idea how to get it back. I think it happened after I deleted a test app from the Legato view but can’t recall for sure. Are you saying the Legato view simply doesn’t work so don’t use it?
On the topic of VS Code I notice the extension has not been updated in a while, also that the forum category for it is not exactly a hive of activity. The extension documentation states “We welcome feedback and want to know what features are important for our users” yet this issue was reported quite a while ago ( Hierarchy View Disappeared ) with apparently no resolution. It also says components are coming in the next release - this seems like an essential feature but that comment was over a year ago. Does anyone know if there are updates in the works or if Sierra is still supporting and actively working on VS Code integration? Should we even be investing the time in using it or is it basically stillborn?
If they’ve effectively deprecated it it would be good to know.