diff --git a/gm/crbug_224618.cpp b/gm/crbug_224618.cpp
new file mode 100644
index 0000000000..4e179eb076
--- /dev/null
+++ b/gm/crbug_224618.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "gm/gm.h"
+#include "include/core/SkCanvas.h"
+#include "include/core/SkColor.h"
+#include "include/core/SkMatrix.h"
+#include "include/core/SkMatrix44.h"
+#include "include/private/SkM44.h"
+#include "tools/timer/TimeUtils.h"
+
+static SkM44 rotate_axis_angle(SkScalar x, SkScalar y, SkScalar z, SkScalar radians) {
+    // SkM44 doesn't expose any rotation factories yet
+    SkMatrix44 m;
+    m.setRotateAboutUnit(x, y, z, radians);
+    return SkM44(m);
+}
+
+// Adapted from https://codepen.io/adamdupuis/pen/qLYzqB
+class CrBug224618GM : public skiagm::GM {
+public:
+    CrBug224618GM() : fTime(0.f) {}
+
+protected:
+    SkString onShortName() override {
+        return SkString("crbug_224618");
+    }
+
+    SkISize onISize() override {
+        return SkISize::Make(kMaxVW, kMaxVW);
+    }
+
+    // This animates the FOV in viewer, to ensure the panorama covering rects are stable across
+    // a variety of perspective matrices
+    bool onAnimate(double nanos) override {
+        fTime = TimeUtils::Scaled(1e-9f * nanos, 0.5f);
+        return true;
+    }
+
+    void onDraw(SkCanvas* canvas) override {
+        SkScalar viewportWidth = SkScalarMod(fTime, 10.f) / 10.f * (kMaxVW - kMinVW) + kMinVW;
+        SkScalar radius = viewportWidth / 2.f; // round?
+        // See https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/perspective
+        SkM44 proj{1.f, 0.f, 0.f, 0.f,
+                   0.f, 1.f, 0.f, 0.f,
+                   0.f, 0.f, 1.f, 0.f,
+                   0.f, 0.f, -1.f / radius, 1.f};
+        SkM44 zoom             = SkM44::Translate(0.f, 0.f, radius);
+        SkM44 postZoom         = SkM44::Translate(0.f, 0.f, -radius - 1.f);
+        SkM44 rotateHorizontal = rotate_axis_angle(0.f, 1.f, 0.f, 2.356194490192345f);
+
+        // w in degrees will need to be converted to radians
+        SkV4 axisAngles[6] = {
+            {0.f, 1.f, 0.f, -90.f}, // rotateY(-90deg)
+            {1.f, 0.f, 0.f, 0.f},   // <none>
+            {0.f, 1.f, 0.f, 90.f},  // rotateY(90deg)
+            {0.f, 1.f, 0.f, 180.f}, // rotateY(180deg)
+            {1.f, 0.f, 0.f, -90.f}, // rotateX(-90deg)
+            {1.f, 0.f, 0.f, 90.f},  // rotateX(90deg)
+        };
+        SkColor faceColors[6] = {
+            SK_ColorRED,
+            SK_ColorGREEN,
+            SK_ColorBLUE,
+            SK_ColorYELLOW,
+            SkColorSetARGB(0xFF, 0xFF, 0xA5, 0x00), // orange css
+            SkColorSetARGB(0xFF, 0x80, 0x00, 0x80)  // purple css
+        };
+        for (int i = 0; i < 6; ++i) {
+            SkM44 model = rotate_axis_angle(axisAngles[i].x, axisAngles[i].y, axisAngles[i].z,
+                                            SkDegreesToRadians(axisAngles[i].w));
+            model = SkM44::Translate(radius, radius) * proj *    // project and place content
+                    zoom * rotateHorizontal * model * postZoom * // main model matrix
+                    SkM44::Translate(-radius, -radius);          // center content
+
+            canvas->save();
+            canvas->experimental_concat44(model);
+
+            SkPaint fillPaint;
+            fillPaint.setAntiAlias(true);
+            fillPaint.setColor(faceColors[i]);
+
+            canvas->drawRect(SkRect::MakeWH(viewportWidth, viewportWidth), fillPaint);
+            canvas->restore();
+        }
+    }
+private:
+    static const int kMaxVW = 800;
+    static const int kMinVW = 300;
+    SkScalar fTime;
+};
+
+DEF_GM(return new CrBug224618GM();)
diff --git a/gn/gm.gni b/gn/gm.gni
index 27a93eadcf..08cdcdc1cf 100644
--- a/gn/gm.gni
+++ b/gn/gm.gni
@@ -104,6 +104,7 @@ gm_sources = [
   "$_gm/convexpolyclip.cpp",
   "$_gm/convexpolyeffect.cpp",
   "$_gm/copy_to_4444.cpp",
+  "$_gm/crbug_224618.cpp",
   "$_gm/crbug_691386.cpp",
   "$_gm/crbug_788500.cpp",
   "$_gm/crbug_847759.cpp",