1 files changed, 24 insertions, 0 deletions
diff --git a/layout/reftests/css-animations/stacking-context-transform-none-with-fill-backwards.html b/layout/reftests/css-animations/stacking-context-transform-none-with-fill-backwards.html
new file mode 100644
index 0000000000..d0515c2945
--- /dev/null
+++ b/layout/reftests/css-animations/stacking-context-transform-none-with-fill-backwards.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>
+Transform animation does not destroy stacking context when the animation
+has finished but has fill:backwards
+</title>
+<style>
+span {
+  height: 100px;
+  width: 100px;
+  position: fixed;
+  background: green;
+  top: 50px;
+}
+@keyframes TransformNone {
+  from, to { transform: none }
+}
+#test {
+  width: 100px; height: 100px;
+  background: blue;
+  animation: TransformNone 100s 100s backwards;
+}
+</style>
+<span></span>
+<div id="test"></div>