diff --git a/layout/generic/nsHTMLReflowState.cpp b/layout/generic/nsHTMLReflowState.cpp
index 070f36caf9fe..5f13b402f29b 100644
--- a/layout/generic/nsHTMLReflowState.cpp
+++ b/layout/generic/nsHTMLReflowState.cpp
@@ -359,13 +359,6 @@ nsHTMLReflowState::Init(nsPresContext* aPresContext,
                    "very large sizes, not attempts at intrinsic inline-size "
                    "calculation");
 
-  if (AvailableBSize() != NS_UNCONSTRAINEDSIZE && parentReflowState &&
-      parentReflowState->GetWritingMode().IsOrthogonalTo(mWritingMode)) {
-    // Orthogonal frames are always reflowed with unconstrained block-size,
-    // to avoid incomplete reflow across an orthogonal boundary.
-    AvailableBSize() = NS_UNCONSTRAINEDSIZE;
-  }
-
   mStylePosition = frame->StylePosition();
   mStyleDisplay = frame->StyleDisplay();
   mStyleVisibility = frame->StyleVisibility();
@@ -439,6 +432,13 @@ nsHTMLReflowState::Init(nsPresContext* aPresContext,
     }
   }
 
+  if (AvailableBSize() != NS_UNCONSTRAINEDSIZE && parentReflowState &&
+      parentReflowState->GetWritingMode().IsOrthogonalTo(mWritingMode)) {
+    // Orthogonal frames are always reflowed with unconstrained block-size,
+    // to avoid incomplete reflow across an orthogonal boundary.
+    AvailableBSize() = NS_UNCONSTRAINEDSIZE;
+  }
+
   NS_WARN_IF_FALSE((mFrameType == NS_CSS_FRAME_TYPE_INLINE &&
                     !frame->IsFrameOfType(nsIFrame::eReplaced)) ||
                    type == nsGkAtoms::textFrame ||