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+<!DOCTYPE html>
+<title>Reference for position:sticky elements should work correctly with grid layout</title>
+
+<style>
+.scroller {
+  position: relative;
+  overflow-x: scroll;
+  overflow-y: hidden;
+  width: 300px;
+  height: 100px;
+  margin-bottom: 15px;
+}
+
+.grid-container {
+  display: grid;
+  grid-template-columns: 25% 25% 25% 25%;
+  grid-template-rows: 100%;
+  width: 400px;
+  height: 90px;
+}
+
+.green {
+  background-color: green;
+}
+
+.grid-item {
+  width: 100%;
+  height: 100%;
+  grid-row: 1;
+}
+
+.padding {
+  height: 1px;
+  width: 700px;
+}
+
+</style>
+
+<script>
+window.addEventListener('load', function() {
+  document.getElementById('scroller1').scrollLeft = 0;
+  document.getElementById('scroller2').scrollLeft = 150;
+  document.getElementById('scroller3').scrollLeft = 300;
+});
+</script>
+
+<p>You should see three green boxes of varying size below. There should be no red or blue.</p>
+
+<div id="scroller1" class="scroller">
+  <div class="grid-container">
+    <div class="grid-item" style="grid-column: 1;"></div>
+    <div class="green grid-item" style="grid-column: 2;"></div>
+    <div class="green grid-item" style="grid-column: 3;"></div>
+  </div>
+  <div class="padding"></div>
+</div>
+
+<div id="scroller2" class="scroller">
+  <div class="grid-container">
+    <div class="grid-item" style="grid-column: 1;"></div>
+    <div class="grid-item" style="grid-column: 2;"></div>
+    <div class="green grid-item" style="grid-column: 3;"></div>
+  </div>
+  <div class="padding"></div>
+</div>
+
+<div id="scroller3" class="scroller">
+  <div class="grid-container">
+    <div class="grid-item" style="grid-column: 1;"></div>
+    <div class="grid-item" style="grid-column: 2;"></div>
+    <div class="grid-item" style="grid-column: 3;"></div>
+    <div class="green grid-item" style="grid-column: 4;"></div>
+  </div>
+  <div class="padding"></div>
+</div>
+