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diff --git a/gfx/wr/wrench/reftests/aa/aa-dist-bug.yaml b/gfx/wr/wrench/reftests/aa/aa-dist-bug.yaml
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+# Test that when the AA range is > 1, the AA is correctly applied to
+# an ellipse clip. This is a regression test for issue #2576.
+# The rectangles below mask out most of the box shadow and rounded
+# corners, which are not relevant to what is being tested here.
+---
+root:
+  items:
+    - type: stacking-context
+      transform: rotate-z(-45) rotate-x(-60)
+      transform-origin: 300 300
+      items:
+        - type: box-shadow
+          bounds: [0, 0, 150, 150]
+          color: black
+          offset: [150, 50]
+          border-radius: 8
+
+        - type: clip
+          bounds: [90, 0, 150, 150]
+          complex:
+            - rect: [90, 0, 150, 150]
+              radius: 8
+          items:
+          - type: rect
+            color: red
+            border-radius: 8
+            bounds: [90, 0, 150, 150]
+
+    - type: rect
+      color: white
+      bounds: [250, 100, 240, 84]
+
+    - type: rect
+      color: white
+      bounds: [250, 204, 240, 70]
+
+    - type: rect
+      color: white
+      bounds: [240, 100, 100, 150]
+
+    - type: rect
+      color: white
+      bounds: [390, 100, 100, 150]