Statiq tries to process excluded files

[anaximander23]

It's possible that I'm misunderstanding exactly how excludes work, but I'm hitting what looks like a bug. I'm working on a reference site using Statiq.Docs, and I'd like to use Obsidian (https://obsidian.md/) as an editor because working with collections of Markdown files is exactly what it's made for. Obsidian keeps all its own settings and metadata in a single .obsidian folder at the root of the collection (called a "vault"). Obviously, I want Statiq to ignore that folder because it'll be full of stuff it can't handle.

So, I did the obvious:

public static Task Main(string[] args) =>
    Bootstrapper
	.Factory
	.CreateDocs(args)
	.AddSetting("CleanMode", CleanMode.Full)
	.AddMappedInputPath(@"G:\My Drive\Obsidian Vaults\Sycamore\", "")
	.AddExcludedPath(@"G:\My Drive\Obsidian Vaults\Sycamore\.obsidian\")
	.AddExcludedPath(@"G:\My Drive\Obsidian Vaults\Sycamore\private\")
	.RunAsync();

I can see these paths specifically indicated as excluded when Statiq runs, but then it proceeds to try processing them anyway, and of course throws an error at that point because they're not something it was intended to handle.

Is this a bug, or am I doing something wrong? How do I make Statiq actually ignore those files entirely?