--- old/modules/javafx.web/src/main/native/Source/WebCore/rendering/RenderMultiColumnSet.cpp	2019-01-15 06:21:39.126012543 -0800
+++ new/modules/javafx.web/src/main/native/Source/WebCore/rendering/RenderMultiColumnSet.cpp	2019-01-15 06:21:39.058012541 -0800
@@ -316,7 +316,7 @@
 
     // FIXME: When we add fragments support, we'll start it off at the width of the multi-column
     // block in that particular fragment.
-    setLogicalWidth(parentBox()->contentLogicalWidth());
+    setLogicalWidth(multiColumnBlockFlow()->contentLogicalWidth());
 }
 
 bool RenderMultiColumnSet::requiresBalancing() const