Contentprovider sample often fails

The Show All References command works sporadically for me. When it fails it prints something like Found 7 references in the right side window and fails to display the actual references. I strongly suspect this is a race condition.

I have a guess as to how to fix it, but I am not sure how to do it. The most sensible place to start would be here.

		for (const group of groups) {
			const uri = group[0].uri;
			const ranges = group.map(loc => loc.range);
			await this._fetchAndFormatLocations(uri, ranges);
			this._emitter.fire(this._uri);
		}

Drawing upon my experience with concurrency on the .NET platform (I am new to Node), I think the issue here is that this._emitter.fire(this._uri); is being called on the wrong thread. If this were a desktop UI app, I'd definitely want to schedule this on the main thread.

Any idea how this might be done with VS Code?

As a side note, when I insert...

const snooze = (ms : number) => new Promise(resolve => setTimeout(resolve, ms));
await snooze(1000);

...before the emitter fire, the stability issues go away. That is a strong indication of there being a concurrency bug here.