Don't paint repeating header if only the border spacing exceeds page height

third_party/WebKit/Source/core/paint/TableSectionPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/TableSectionPainter.h"
 
 #include "core/layout/LayoutTableCell.h"
 #include "core/layout/LayoutTableCol.h"
 #include "core/layout/LayoutTableRow.h"
 #include "core/paint/BoxClipper.h"
@@ skipping 51 matching lines @@
       pageHeight - intMod(headerGroupOffset, pageHeight);
   paginationOffset.move(LayoutUnit(), offsetToNextPage);
   // Now move paginationOffset to the top of the page the cull rect starts on.
   if (paintInfo.cullRect().m_rect.y() > paginationOffset.y()) {
     paginationOffset.move(LayoutUnit(), pageHeight *
                                             ((paintInfo.cullRect().m_rect.y() -
                                               paginationOffset.y()) /
                                              pageHeight)
                                                 .toInt());
   }
-  LayoutUnit bottomBound =
-      std::min(LayoutUnit(paintInfo.cullRect().m_rect.maxY()),
-               paintOffset.y() + table->logicalHeight());
+  LayoutUnit bottomBound = std::min(
+      LayoutUnit(paintInfo.cullRect().m_rect.maxY()),
+      paintOffset.y() + (table->logicalHeight() - table->vBorderSpacing()));

[mstensho (USE GERRIT), 2016/11/01 20:41:32]

What if it's only bottom captions that exceed the height?

   paginationOffset.move(LayoutUnit(), -m_layoutTableSection.logicalTop());
   while (paginationOffset.y() < bottomBound) {
     LayoutPoint nestedOffset =
         paginationOffset +
         LayoutPoint(LayoutUnit(),
                     m_layoutTableSection.offsetForRepeatingHeader());
     if (itemToPaint == PaintCollapsedBorders)
       paintCollapsedSectionBorders(paintInfo, nestedOffset, currentBorderValue);
     else
       paintSection(paintInfo, nestedOffset);
@@ skipping 308 matching lines @@
   LayoutRect bounds = BoxPainter(m_layoutTableSection)
                           .boundsForDrawingRecorder(paintInfo, paintOffset);
   LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutTableSection,
                                        type, bounds);
   BoxPainter::paintBoxShadow(
       paintInfo, LayoutRect(paintOffset, m_layoutTableSection.size()),
       m_layoutTableSection.styleRef(), shadowStyle);
 }
 
 }  // namespace blink