diff --git a/gfx/tests/crashtests/675550-1.html b/gfx/tests/crashtests/675550-1.html
new file mode 100644
index 000000000000..d6c25b59e08f
--- /dev/null
+++ b/gfx/tests/crashtests/675550-1.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<style>
+
+.justify {
+  width: 400px;
+  text-align: justify;
+  background: lightgreen;
+}
+
+.force {
+  width: 400px;
+  display: inline-block;
+  height: 3px;
+  background: yellow;
+}
+
+</style>
+</head>
+<body onload="document.getElementById('s').textContent='\u202E\0 \u1DCEz'; /* cannot express \0 in html markup using amp escape */">
+<div class="justify"><span class="force"></span><span id="s"></span><span class="force"></span></div>
+</body>
+</html>
diff --git a/gfx/tests/crashtests/crashtests.list b/gfx/tests/crashtests/crashtests.list
index 608105c86df8..b864dcf9197d 100644
--- a/gfx/tests/crashtests/crashtests.list
+++ b/gfx/tests/crashtests/crashtests.list
@@ -99,6 +99,7 @@ load 633322-1.html
 load 633453-1.html
 load 662467-1.html
 load 665218.html
+load 675550-1.html
 load 686190-1.html
 load 693143-1.html
 load 710149-1.html
