1 files changed, 22 insertions, 0 deletions
diff --git a/dom/base/test/fullscreen/file_fullscreen-bug-1798219-2.html b/dom/base/test/fullscreen/file_fullscreen-bug-1798219-2.html
new file mode 100644
index 0000000000..61db80c228
--- /dev/null
+++ b/dom/base/test/fullscreen/file_fullscreen-bug-1798219-2.html
@@ -0,0 +1,22 @@
+<!DOCTYPE HTML>
+<button>Launch</button>
+<script>
+let button = document.querySelector("button");
+button.addEventListener("click", function(e) {
+  let newWindow = window.open("", "", "newWindow");
+  newWindow.document.write(`<!DOCTYPE HTML>
+    <button>click me!</button>
+    <script>
+      let button = document.querySelector("button");
+      button.addEventListener("click", function(e) {
+        document.documentElement.requestFullscreen();
+        setTimeout(() => {
+          while(true) {
+            // slowdown event loop
+          };
+        }, 1);
+        location.href = "https://example.org/browser/dom/base/test/fullscreen/dummy_page.html";
+      });
+    <\/script>`);
+});
+</script>