diff --git a/packages/react/src/container/Pane/index.tsx b/packages/react/src/container/Pane/index.tsx
index 3296098b..460c290d 100644
--- a/packages/react/src/container/Pane/index.tsx
+++ b/packages/react/src/container/Pane/index.tsx
@@ -163,6 +163,7 @@ export function Pane({
       resetSelectedElements();
 
       onSelectionStart?.(event);
+      selectionInProgress.current = true;
     }
   };
 
diff --git a/packages/svelte/src/lib/container/Pane/Pane.svelte b/packages/svelte/src/lib/container/Pane/Pane.svelte
index 46c48625..45547737 100644
--- a/packages/svelte/src/lib/container/Pane/Pane.svelte
+++ b/packages/svelte/src/lib/container/Pane/Pane.svelte
@@ -126,6 +126,7 @@
       store.unselectNodesAndEdges();
 
       onselectionstart?.(event);
+      selectionInProgress = true;
     }
   }