Table cells, rows, sections or column (groups) don't support margins.

Source/core/layout/LayoutTableRow.cpp

Index: Source/core/layout/LayoutTableRow.cpp
diff --git a/Source/core/layout/LayoutTableRow.cpp b/Source/core/layout/LayoutTableRow.cpp
index 318fa6a76ab84e0efd9b2b790bd6027fdb9c5e28..93adae4e3a52fe9d8fc78885c4e233eb403f34c1 100644
--- a/Source/core/layout/LayoutTableRow.cpp
+++ b/Source/core/layout/LayoutTableRow.cpp
@@ -167,10 +167,8 @@ void LayoutTableRow::layout()
         SubtreeLayoutScope layouter(*cell);
         if (!cell->needsLayout())
             cell->markForPaginationRelayoutIfNeeded(layouter);
-        if (cell->needsLayout()) {
-            cell->computeAndSetBlockDirectionMargins(table());
+        if (cell->needsLayout())
             cell->layout();
-        }
     }
 
     m_overflow.clear();