diff --git a/third_party/WebKit/Source/core/layout/line/InlineTextBox.cpp b/third_party/WebKit/Source/core/layout/line/InlineTextBox.cpp
index e4d74e8..3f62c7d 100644
--- a/third_party/WebKit/Source/core/layout/line/InlineTextBox.cpp
+++ b/third_party/WebKit/Source/core/layout/line/InlineTextBox.cpp
@@ -419,9 +418,14 @@ LayoutUnit InlineTextBox::PlaceEllipsisBox(bool flow_is_ltr,
                                : LogicalRight() - visible_box_width;
     }
 
     // We measure the text using the second half of the previous character and
     // the first half of the current one when the text is rtl. This gives a
     // more accurate position in rtl text.
+    // TODO(crbug.com/722043: This doesn't always give the best results.
     int offset = OffsetForPosition(ellipsis_x, !ltr);
     // Full truncation is only necessary when we're flowing left-to-right.
     if (flow_is_ltr && offset == 0 && ltr == flow_is_ltr) {