diff --git a/layout/reftests/bugs/1348481-1.html b/layout/reftests/bugs/1348481-1.html
new file mode 100644
index 000000000000..fae677e1f545
--- /dev/null
+++ b/layout/reftests/bugs/1348481-1.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<link id="target" rel="stylesheet" href="data:text/css,">
+<link rel="stylesheet" href="data:text/css,div { color: green }">
+<link rel="stylesheet" href="data:text/css,">
+<div>This should be green</div>
+<script>
+  onload = function() {
+    var link = document.createElement("link");
+    link.rel = "stylesheet";
+    link.href = "data:text/css,div { color: red; }";
+    link.title = "turnitred";
+    var target = document.getElementById("target");
+    target.parentNode.insertBefore(link, target);
+  }
+</script>
diff --git a/layout/reftests/bugs/1348481-2.html b/layout/reftests/bugs/1348481-2.html
new file mode 100644
index 000000000000..4d197d6a0f29
--- /dev/null
+++ b/layout/reftests/bugs/1348481-2.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<link rel="stylesheet" href="data:text/css,div { color: green }">
+<link rel="stylesheet" href="data:text/css,div { color: green }">
+<div>This should be green</div>
+<script>
+  onload = function() {
+    var links = document.getElementsByTagName("link");
+    links[0].remove();
+  }
+</script>
diff --git a/layout/reftests/bugs/1348481-3.html b/layout/reftests/bugs/1348481-3.html
new file mode 100644
index 000000000000..898199e5b5fa
--- /dev/null
+++ b/layout/reftests/bugs/1348481-3.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<link rel="stylesheet" href="data:text/css,div { color: green }">
+<link rel="stylesheet" href="data:text/css,div { color: green }">
+<div>This should be green</div>
+<script>
+  onload = function() {
+    var links = document.getElementsByTagName("link");
+    links[0].sheet.cssRules[0].style.color = "red";
+  }
+</script>
diff --git a/layout/reftests/bugs/1348481-ref.html b/layout/reftests/bugs/1348481-ref.html
new file mode 100644
index 000000000000..cd4a755bb76c
--- /dev/null
+++ b/layout/reftests/bugs/1348481-ref.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<style>
+div {
+  color: green;
+}
+</style>
+<div>This should be green</div>
diff --git a/layout/reftests/bugs/reftest.list b/layout/reftests/bugs/reftest.list
index 7cb8051b4790..4eb67a7b1b5b 100644
--- a/layout/reftests/bugs/reftest.list
+++ b/layout/reftests/bugs/reftest.list
@@ -1990,6 +1990,9 @@ fuzzy(2,40000) == 1316719-1c.html 1316719-1-ref.html
 skip-if(Android) != 1318769-1.html 1318769-1-ref.html
 fails-if(stylo) == 1322512-1.html 1322512-1-ref.html
 == 1330051.svg 1330051-ref.svg
+== 1348481-1.html 1348481-ref.html
+== 1348481-2.html 1348481-ref.html
+fails-if(stylo) == 1348481-3.html 1348481-ref.html
 == 1352464-1.html 1352464-1-ref.html
 == 1358375-1.html 1358375-ref.html
 == 1358375-2.html 1358375-ref.html
