Fix

src/Features/Core/Portable/SpellCheck/AbstractSpellCheckCodeFixProvider.cs

@@ -185,12 +185,17 @@ private async Task CheckTokenAsync(CodeFixContext context, Document document, Sy
             }
         }
 
+        private static readonly char[] s_punctuation = new[] { '(', '[', '<' };
+
         private static async Task<string> GetInsertionTextAsync(Document document, CompletionItem item, TextSpan completionListSpan, CancellationToken cancellationToken)
         {
             var service = CompletionService.GetService(document);
             var change = await service.GetChangeAsync(document, item, completionListSpan, commitCharacter: null, cancellationToken).ConfigureAwait(false);
-
-            return change.TextChange.NewText;
+            var text = change.TextChange.NewText;
+            var nonCharIndex = text.IndexOfAny(s_punctuation);
+            return nonCharIndex > 0
+                ? text[0..nonCharIndex]
+                : text;
         }
 
         private SpellCheckCodeAction CreateCodeAction(SyntaxToken nameToken, string oldName, string newName, Document document)