diff --git a/lib/Resizable.js b/lib/Resizable.js
index 44f6b8f7..e12a29d3 100644
--- a/lib/Resizable.js
+++ b/lib/Resizable.js
@@ -127,8 +127,12 @@ export default class Resizable extends React.Component<Props, void> {
       if (axisV === 'n') deltaY = -deltaY;
 
       // Update w/h by the deltas. Also factor in transformScale.
-      let width = this.props.width + (canDragX ? deltaX / this.props.transformScale : 0);
-      let height = this.props.height + (canDragY ? deltaY / this.props.transformScale : 0);
+      // Use lastSize (if available) instead of props to avoid losing deltas
+      // when React can't re-render between consecutive mouse events.
+      const baseWidth = this.lastSize?.width ?? this.props.width;
+      const baseHeight = this.lastSize?.height ?? this.props.height;
+      let width = baseWidth + (canDragX ? deltaX / this.props.transformScale : 0);
+      let height = baseHeight + (canDragY ? deltaY / this.props.transformScale : 0);
 
       // Run user-provided constraints.
       [width, height] = this.runConstraints(width, height);