diff --git a/packages/flutter/lib/src/rendering/proxy_box.dart b/packages/flutter/lib/src/rendering/proxy_box.dart
index 8c5185021231..bdc906be0e7a 100644
--- a/packages/flutter/lib/src/rendering/proxy_box.dart
+++ b/packages/flutter/lib/src/rendering/proxy_box.dart
@@ -2017,6 +2017,7 @@ class RenderPhysicalModel extends _RenderPhysicalModelBase<RRect> {
 
     _updateClip();
     final RRect offsetRRect = _clip!.shift(offset);
+    final Rect offsetBounds = offsetRRect.outerRect;
     final Path offsetRRectAsPath = Path()..addRRect(offsetRRect);
     bool paintShadows = true;
     assert(() {
@@ -2037,6 +2038,14 @@ class RenderPhysicalModel extends _RenderPhysicalModelBase<RRect> {
 
     final Canvas canvas = context.canvas;
     if (elevation != 0.0 && paintShadows) {
+      // The drawShadow call doesn't add the region of the shadow to the
+      // picture's bounds, so we draw a hardcoded amount of extra space to
+      // account for the maximum potential area of the shadow.
+      // TODO(jsimmons): remove this when Skia does it for us.
+      canvas.drawRect(
+        offsetBounds.inflate(20.0),
+        _transparentPaint,
+      );
       canvas.drawShadow(
         offsetRRectAsPath,
         shadowColor,