Need to invalidate scrollbars in case they get repositioned.

Source/core/layout/LayoutObject.cpp

Index: Source/core/layout/LayoutObject.cpp
diff --git a/Source/core/layout/LayoutObject.cpp b/Source/core/layout/LayoutObject.cpp
index 822373f88222ca5d4d057771d71ac812fcc2e727..4f9f22816662da5876519578f5aa07733f999eb3 100644
--- a/Source/core/layout/LayoutObject.cpp
+++ b/Source/core/layout/LayoutObject.cpp
@@ -636,6 +636,11 @@ bool LayoutObject::skipInvalidationWhenLaidOutChildren() const
     if (isSVG() || (isRenderBlockFlow() && toRenderBlockFlow(this)->firstLineBox()))
         return false;
 
+    // In case scrollbars got repositioned (which will typically happen if the layout object got
+    // resized), we cannot skip invalidation.
+    if (hasNonCompositedScrollbars())
+        return false;
+
     return rendererHasNoBoxEffect();
 }