Show change bar for an end-of-paragraph change

Fixes bug #13003.

src/Row.cpp

@@ -425,6 +425,7 @@ bool Row::sameString(Font const & f, Change const & ch) const
 }
 
 
+// FIXME: remove this and move the changebar update to Row::push_back()
 void Row::finalizeLast()
 {
 	if (elements_.empty())

src/TextMetrics.cpp

@@ -1176,6 +1176,9 @@ RowList TextMetrics::breakParagraph(Row const & bigrow) const
 		// Last row in paragraph is flushed
 		rows.back().flushed(true);
 		cleanupRow(rows.back(), true);
+		// Is there an end-of-paragraph change?
+		if (bigrow.needsChangeBar())
+			rows.back().needsChangeBar(true);
 	}
 
 	return rows;