Merge pull request #5489 from Sec-ant/feat/node-drag-distance

fix: node selection instability by using client coordinates for drag threshold

.changeset/chilly-beans-juggle.md

@@ -0,0 +1,5 @@
+---
+'@xyflow/system': patch
+---
+
+Fix nodeDragThreshold changing with zoom level

packages/system/src/xydrag/XYDrag.ts

@@ -334,8 +334,10 @@ export function XYDrag<OnNodeDrag extends (e: any, nodes: any, node: any) => voi
         }
 
         if (!dragStarted) {
-          const x = pointerPos.xSnapped - (lastPos.x ?? 0);
+          // Calculate distance in client coordinates for consistent drag threshold behavior across zoom levels
-          const y = pointerPos.ySnapped - (lastPos.y ?? 0);
+          const currentMousePosition = getEventPosition(event.sourceEvent, containerBounds!);
+          const x = currentMousePosition.x - mousePosition.x;
+          const y = currentMousePosition.y - mousePosition.y;
           const distance = Math.sqrt(x * x + y * y);
 
           if (distance > nodeDragThreshold) {