Merge pull request #5221 from xyflow/refactor/measured-check

.changeset/red-plums-fly.md

@@ -0,0 +1,5 @@
+---
+'@xyflow/system': patch
+---
+
+Allow zero as a valid node width/height value

packages/system/src/utils/store.ts

@@ -125,7 +125,9 @@ export function adoptUserNodes<NodeType extends NodeBase>(
     }
 
     if (
-      (!internalNode.measured || !internalNode.measured.width || !internalNode.measured.height) &&
+      (internalNode.measured === undefined ||
+        internalNode.measured.width === undefined ||
+        internalNode.measured.height === undefined) &&
       !internalNode.hidden
     ) {
       nodesInitialized = false;