From b1f1b2321b01ac2b17bb37147fea1a5aea26e487 Mon Sep 17 00:00:00 2001
From: Richard Kimberly Heck <rikiheck@lyx.org>
Date: Thu, 4 Oct 2018 21:02:51 -0400
Subject: [PATCH] Fix part of bug #8521.

---
 src/mathed/InsetMathDelim.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mathed/InsetMathDelim.cpp b/src/mathed/InsetMathDelim.cpp
index 809e8a0c13..6a2be5e118 100644
--- a/src/mathed/InsetMathDelim.cpp
+++ b/src/mathed/InsetMathDelim.cpp
@@ -182,11 +182,15 @@ void InsetMathDelim::mathematica(MathematicaStream & os) const
 void InsetMathDelim::mathmlize(MathStream & os) const
 {
 	os << "<mo form='prefix' fence='true' stretchy='true' symmetric='true'>"
+	   << "<mrow>"
 	   << convertDelimToXMLEscape(left_)
+	   << "</mrow>"
 	   << "</mo>\n"
 	   << cell(0)
 	   << "\n<mo form='postfix' fence='true' stretchy='true' symmetric='true'>"
+	   << "<mrow>"
 	   << convertDelimToXMLEscape(right_)
+	   << "</mrow>"
 	   << "</mo>\n";
 }
 
-- 
2.39.2