diff --git a/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm b/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm
index 2f5c252898439..4ba6ed66a58a6 100644
--- a/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm
+++ b/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm
@@ -1293,7 +1293,9 @@ - (NSString*)textInRange:(UITextRange*)range {
   if (textRange.location == NSNotFound) {
     // Avoids [crashes](https://github.com/flutter/flutter/issues/138464) from an assertion
     // against NSNotFound.
-    // TODO(hellohuanlin): root cause https://github.com/flutter/flutter/issues/160100
+    // TODO(hellohuanlin): This is a temp workaround, but we should look into why
+    // framework is providing NSNotFound to the engine.
+    // https://github.com/flutter/flutter/issues/160100
     return nil;
   }
   // Sanitize the range to prevent going out of bounds.
diff --git a/shell/platform/darwin/ios/framework/Source/TextInputSemanticsObject.mm b/shell/platform/darwin/ios/framework/Source/TextInputSemanticsObject.mm
index 5d30415449bf6..0057d05e0effc 100644
--- a/shell/platform/darwin/ios/framework/Source/TextInputSemanticsObject.mm
+++ b/shell/platform/darwin/ios/framework/Source/TextInputSemanticsObject.mm
@@ -45,7 +45,9 @@ - (NSString*)textInRange:(UITextRange*)range {
   if (textRange.location == NSNotFound) {
     // Avoids [crashes](https://github.com/flutter/flutter/issues/138464) from an assertion
     // against NSNotFound.
-    // TODO(hellohuanlin): https://github.com/flutter/flutter/issues/160100
+    // TODO(hellohuanlin): This is a temp workaround, but we should look into why
+    // framework is providing NSNotFound to the engine.
+    // https://github.com/flutter/flutter/issues/160100
     return nil;
   }
   return [self.text substringWithRange:textRange];