Really reduced usability for me in my notetaking system in this behavior. I use tags to identify relationships in my daily notes, toward creating new evergreen notes. I can’t filter the graph view on the path that holds my daily notes without losing the tags on the graph view. It also fails if I filter out other folders instead, as OP notes.
I read the “Tags” filter switch as saying: “Show tags as separate nodes or not.” Feels like the option should do just that, in combination with any other search parameters. As currently configured, the option is meaningless if you put in search terms, which feel like a usability issue.
I’d expect same behavior of the other filters (“Existing files only”, etc.) … as ways to fine tune the display of the graph in combination with the search, as if we were adding parameters on a query.