diff --git a/html/semantics/popovers/popover-target-element-disabled.html b/html/semantics/popovers/popover-target-element-disabled.html
index 92c28a4b6c58d67..59392f428ae3eac 100644
--- a/html/semantics/popovers/popover-target-element-disabled.html
+++ b/html/semantics/popovers/popover-target-element-disabled.html
@@ -124,3 +124,53 @@
     'The outer popover be should be closed when the hierarchy is broken.');
 }, 'Disconnecting popover*target buttons when popovers are open should close all popovers.');
 </script>
+
+<div id=outerpopover7 popover=auto>
+  <button id=togglebutton7 popovertarget=innerpopover7>toggle popover</button>
+</div>
+<div id=innerpopover7 popover=auto>popover</div>
+<script>
+test(() => {
+  outerpopover7.showPopover();
+  innerpopover7.showPopover();
+  assert_true(innerpopover7.matches(':open'),
+    'The inner popover should be able to open successfully.');
+  assert_true(outerpopover7.matches(':open'),
+    'The outer popover should stay open when opening the inner one.');
+
+  togglebutton7.setAttribute('popovertarget', 'otherpopover7');
+  assert_false(innerpopover7.matches(':open'),
+    'The inner popover be should be closed when the hierarchy is broken.');
+  assert_false(outerpopover7.matches(':open'),
+    'The outer popover be should be closed when the hierarchy is broken.');
+}, 'Changing the popovertarget attribute to break the chain should close all popovers.');
+</script>
+
+<div id=outerpopover8 popover=auto>
+  <div id=middlepopover8 popover=auto>
+    <div id=innerpopover8 popover=auto>hello</div>
+  </div>
+</div>
+<div id=otherpopover8 popover=auto>other popover</div>
+<button id=togglebutton8 popovertarget=middlepopover8>other button</div>
+<script>
+test(() => {
+  outerpopover8.showPopover();
+  middlepopover8.showPopover();
+  innerpopover8.showPopover();
+  assert_true(innerpopover8.matches(':open'),
+    'The inner popover should be able to open successfully.');
+  assert_true(middlepopover8.matches(':open'),
+    'The middle popover should stay open when opening the inner one.');
+  assert_true(outerpopover8.matches(':open'),
+    'The outer popover should stay open when opening the inner one.');
+
+  togglebutton8.setAttribute('popovertarget', 'otherpopover8');
+  assert_true(innerpopover8.matches(':open'),
+    'The inner popover should remain open.');
+  assert_true(middlepopover8.matches(':open'),
+    'The middle popover should remain open.');
+  assert_true(outerpopover8.matches(':open'),
+    'The outer popover should remain open.');
+}, `Modifying popovertarget on a button which doesn't break the chain shouldn't close any popovers.`);
+</script>