diff --git a/src/browser/components/tools/shared/ToolResultImages.tsx b/src/browser/components/tools/shared/ToolResultImages.tsx
index 89c8912fbf..58c6c55ba2 100644
--- a/src/browser/components/tools/shared/ToolResultImages.tsx
+++ b/src/browser/components/tools/shared/ToolResultImages.tsx
@@ -118,6 +118,12 @@ export const ToolResultImages: React.FC<ToolResultImagesProps> = ({ result }) =>
       {/* Lightbox modal for full-size image viewing */}
       <Dialog open={selectedImage !== null} onOpenChange={() => setSelectedImage(null)}>
         <DialogContent
+          onKeyDown={(e) => {
+            // Prevent Escape from propagating to global handlers (stream interrupt)
+            if (e.key === "Escape") {
+              e.stopPropagation();
+            }
+          }}
           maxWidth="90vw"
           maxHeight="90vh"
           className="flex items-center justify-center bg-black/90 p-2"