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diff --git a/devtools/client/inspector/rules/test/browser_rules_grid-toggle_03.js b/devtools/client/inspector/rules/test/browser_rules_grid-toggle_03.js
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+++ b/devtools/client/inspector/rules/test/browser_rules_grid-toggle_03.js
@@ -0,0 +1,137 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test toggling the grid highlighter in the rule view with multiple grids in the page.
+
+const TEST_URI = `
+  <style type='text/css'>
+    .grid {
+      display: grid;
+    }
+  </style>
+  <div id="grid1" class="grid">
+    <div class="cell1">cell1</div>
+    <div class="cell2">cell2</div>
+  </div>
+  <div id="grid2" class="grid">
+    <div class="cell1">cell1</div>
+    <div class="cell2">cell2</div>
+  </div>
+`;
+
+add_task(async function () {
+  await pushPref("devtools.gridinspector.maxHighlighters", 1);
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openRuleView();
+  const highlighters = view.highlighters;
+  const HIGHLIGHTER_TYPE = inspector.highlighters.TYPES.GRID;
+  const { waitForHighlighterTypeShown } = getHighlighterTestHelpers(inspector);
+
+  info("Selecting the first grid container.");
+  await selectNode("#grid1", inspector);
+  let container = getRuleViewProperty(view, ".grid", "display").valueSpan;
+  let gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+
+  info(
+    "Checking the state of the CSS grid toggle for the first grid container in the " +
+      "rule-view."
+  );
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    !gridToggle.classList.contains("active"),
+    "Grid highlighter toggle button is not active."
+  );
+  ok(!highlighters.gridHighlighters.size, "No CSS grid highlighter is shown.");
+
+  info(
+    "Toggling ON the CSS grid highlighter for the first grid container from the " +
+      "rule-view."
+  );
+  let onHighlighterShown = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);
+  gridToggle.click();
+  await onHighlighterShown;
+
+  info(
+    "Checking the CSS grid highlighter is created and toggle button is active in " +
+      "the rule-view."
+  );
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    gridToggle.classList.contains("active"),
+    "Grid highlighter toggle is active."
+  );
+  is(highlighters.gridHighlighters.size, 1, "CSS grid highlighter is shown.");
+
+  info("Selecting the second grid container.");
+  await selectNode("#grid2", inspector);
+  const firstGridHighterShown = highlighters.gridHighlighters
+    .keys()
+    .next().value;
+  container = getRuleViewProperty(view, ".grid", "display").valueSpan;
+  gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+
+  info(
+    "Checking the state of the CSS grid toggle for the second grid container in the " +
+      "rule-view."
+  );
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    !gridToggle.classList.contains("active"),
+    "Grid highlighter toggle button is not active."
+  );
+  is(
+    highlighters.gridHighlighters.size,
+    1,
+    "CSS grid highlighter is still shown."
+  );
+
+  info(
+    "Toggling ON the CSS grid highlighter for the second grid container from the " +
+      "rule-view."
+  );
+  onHighlighterShown = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);
+  gridToggle.click();
+  await onHighlighterShown;
+
+  info(
+    "Checking the CSS grid highlighter is created for the second grid container and " +
+      "toggle button is active in the rule-view."
+  );
+  ok(
+    gridToggle.classList.contains("active"),
+    "Grid highlighter toggle is active."
+  );
+  ok(
+    highlighters.gridHighlighters.keys().next().value != firstGridHighterShown,
+    "Grid highlighter for the second grid container is shown."
+  );
+
+  info("Selecting the first grid container.");
+  await selectNode("#grid1", inspector);
+  container = getRuleViewProperty(view, ".grid", "display").valueSpan;
+  gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+
+  info(
+    "Checking the state of the CSS grid toggle for the first grid container in the " +
+      "rule-view."
+  );
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    !gridToggle.classList.contains("active"),
+    "Grid highlighter toggle button is not active."
+  );
+});