diff --git i/examples/01-basic/12-multi-editor/src/App.tsx w/examples/01-basic/12-multi-editor/src/App.tsx
index bf891fecb..0f5bc1c30 100644
--- i/examples/01-basic/12-multi-editor/src/App.tsx
+++ w/examples/01-basic/12-multi-editor/src/App.tsx
@@ -18,7 +18,7 @@ function Editor(props: { initialContent?: PartialBlock[] }) {
 export default function App() {
   // Creates & renders two editors side by side.
   return (
-    <div style={{ display: "flex" }}>
+    <div style={{ display: "flex", gap: "20px", padding: "20px" }}>
       <Editor
         initialContent={[
           {
@@ -49,6 +49,65 @@ export default function App() {
           },
         ]}
       />
+      {/* Non-BlockNote draggable & droppable area for testing relevance gate */}
+      <div
+        style={{
+          flex: 1,
+          border: "2px dashed #ccc",
+          borderRadius: "8px",
+          padding: "20px",
+          display: "flex",
+          flexDirection: "column",
+          gap: "10px",
+        }}
+      >
+        <h3 style={{ margin: "0 0 10px 0" }}>Non-BlockNote Drag & Drop Area</h3>
+        <div
+          draggable
+          onDragStart={(e) => {
+            e.dataTransfer.setData("text/plain", "This is not a BlockNote drag");
+            e.dataTransfer.effectAllowed = "move";
+          }}
+          style={{
+            padding: "10px",
+            backgroundColor: "#e3f2fd",
+            borderRadius: "4px",
+            cursor: "grab",
+            border: "1px solid #90caf9",
+          }}
+        >
+          🎯 Drag me! (Not a BlockNote drag)
+        </div>
+        <div
+          onDragOver={(e) => {
+            e.preventDefault();
+            e.currentTarget.style.backgroundColor = "#fff3e0";
+          }}
+          onDragLeave={(e) => {
+            e.currentTarget.style.backgroundColor = "transparent";
+          }}
+          onDrop={(e) => {
+            e.preventDefault();
+            e.currentTarget.style.backgroundColor = "transparent";
+            const data = e.dataTransfer.geata("text/plain");
+            alert(`Dropped: ${data || "Unknown data"}`);
+          }}
+          style={{
+            minHeight: "100px",
+            padding: "10px",
+            border: "2px dashed #ff9800",
+            borderRadius: "4px",
+            backgroundColor: "transparent",
+            transition: "background-color 0.2s",
+          }}
+        >
+          Drop zone (non-BlockNote)
+        </div>
+        <p style={{ fontSize: "12px", color: "#666", margin: "10px 0 0 0" }}>
+          This area should NOT trigger BlockNote's drag handlers when dragging
+          to/from BlockNote editors.
+        </p>
+      </div>
     </div>
   );
 }