Yes, It takes it's time indexing the graph - and you have to re-index periodically if you want you queries and graph to be in shape. I have a pretty mature KB, and this process takes no more than a few seconds, so it's fine.

Honestly, I love everything about it, except for the app itself. It ties me to the default editor, which is an Electron-based sluggish resource hog. I'd rather have some software scaffolding to work in an editor of my preference, but that is just me. I suspect most people in most use cases won't find it as problematic.