diff --git a/extensions/typescript-language-features/src/test/completions.test.ts b/extensions/typescript-language-features/src/test/completions.test.ts
index 46617dc32bb..5a0a8b8d9c7 100644
--- a/extensions/typescript-language-features/src/test/completions.test.ts
+++ b/extensions/typescript-language-features/src/test/completions.test.ts
@@ -18,27 +18,37 @@ suite('TypeScript Completions', () => {
 		return vscode.commands.executeCommand('workbench.action.closeAllEditors');
 	});
 
+	test('Should insert backets when completing dot properties with spaces in name', async () => {
+		await wait(100);
+
+		await createTestEditor(testDocumentUri,
+			'const x = { "hello world": 1 };',
+			'x.$0'
+		);
+
+		const document = await acceptFirstSuggestion(testDocumentUri, _disposables);
+		assert.strictEqual(
+			document.getText(),
+			joinLines(
+				'const x = { "hello world": 1 };',
+				'x["hello world"]'
+			));
+	});
+
 	test('Should not prioritize bracket accessor completions. #63100', async () => {
 		await wait(100);
 
 		// 'a' should be first entry in completion list
-		await createTestEditor(joinLines(
+		await createTestEditor(testDocumentUri,
 			'const x = { "z-z": 1, a: 1 };',
-			'x.'
-		));
+			'x.$0'
+		);
 
-		const didChangeDocument = onChangedDocument(testDocumentUri, _disposables);
-		const didSuggest = onDidSuggest(_disposables);
-
-		await vscode.commands.executeCommand('editor.action.triggerSuggest');
-		await didSuggest;
-		await vscode.commands.executeCommand('acceptSelectedSuggestion');
-
-		const document = await didChangeDocument;
+		const document = await acceptFirstSuggestion(testDocumentUri, _disposables);
 		assert.strictEqual(
 			document.getText(),
 			joinLines(
-				'const x = { "a": 1, "z-z": 2 };',
+				'const x = { "z-z": 1, a: 1 };',
 				'x.a'
 			));
 	});
@@ -48,6 +58,15 @@ const joinLines = (...args: string[]) => args.join('\n');
 
 const wait = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
 
+async function acceptFirstSuggestion(uri: vscode.Uri, _disposables: vscode.Disposable[]) {
+	const didChangeDocument = onChangedDocument(uri, _disposables);
+	const didSuggest = onDidSuggest(_disposables);
+	await vscode.commands.executeCommand('editor.action.triggerSuggest');
+	await didSuggest;
+	await vscode.commands.executeCommand('acceptSelectedSuggestion');
+	return await didChangeDocument;
+}
+
 function onChangedDocument(documentUri: vscode.Uri, disposables: vscode.Disposable[]) {
 	return new Promise<vscode.TextDocument>(resolve => vscode.workspace.onDidChangeTextDocument(e => {
 		if (e.document.uri.toString() === documentUri.toString()) {
@@ -56,15 +75,15 @@ function onChangedDocument(documentUri: vscode.Uri, disposables: vscode.Disposab
 	}, undefined, disposables));
 }
 
-async function createTestEditor(contents: string) {
-	const document = await vscode.workspace.openTextDocument(testDocumentUri);
+async function createTestEditor(uri: vscode.Uri, ...lines: string[]) {
+	const document = await vscode.workspace.openTextDocument(uri);
 	await vscode.window.showTextDocument(document);
 	const activeEditor = vscode.window.activeTextEditor;
 	if (!activeEditor) {
 		throw new Error('no active editor');
 	}
 
-	await activeEditor.insertSnippet(new vscode.SnippetString(contents));
+	await activeEditor.insertSnippet(new vscode.SnippetString(joinLines(...lines)));
 }
 
 function onDidSuggest(disposables: vscode.Disposable[]) {