diff --git a/src/Essentials/src/MediaPicker/MediaPicker.ios.cs b/src/Essentials/src/MediaPicker/MediaPicker.ios.cs
index 5e7ca0389f65..85b2ca5dc484 100644
--- a/src/Essentials/src/MediaPicker/MediaPicker.ios.cs
+++ b/src/Essentials/src/MediaPicker/MediaPicker.ios.cs
@@ -502,6 +502,14 @@ class PhotoPickerDelegate : PHPickerViewControllerDelegate
 
 		public override void DidFinishPicking(PHPickerViewController picker, PHPickerResult[] results)
 		{
+			// Null out the presentation delegate handler before dismiss to prevent a GC race condition.
+			// Without this, Dispose() on PhotoPickerPresentationControllerDelegate can fire tcs.TrySetResult([])
+			// while the async CompletedHandler is still processing (especially slow for HEIC transcoding).
+			if (picker.PresentationController?.Delegate is PhotoPickerPresentationControllerDelegate pd)
+			{
+				pd.Handler = null;
+			}
+
 			var captured = results?.Length > 0 ? results : [];
             picker.DismissViewController(true, () => CompletedHandler?.Invoke(captured));
 		}