diff --git a/package-lock.json b/package-lock.json
index 3e0b19fad5..caf335de9b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14085,9 +14085,9 @@
       }
     },
     "node_modules/morgan": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.11.0.tgz",
-      "integrity": "sha512-zSkVu3t18r39pw4ixfBKvfZi3y2UOqr7d4WYwcj3m8nXpEQK4rPO6GLzs/CExoRgmX3y9EjmmcXqv6jq0SK46g==",
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.12.0.tgz",
+      "integrity": "sha512-OHpTRQwn2ezasILW8iKe+Yww1XsfWsZIpUOLF7RDb2g5GwO3trPaRwi7+8BDiJ7HFx2Kg2mfUdCBcVhwYlOz2g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/tests/browser/01_io.js b/tests/browser/01_io.js
index cbfec083af..435fc5d702 100644
--- a/tests/browser/01_io.js
+++ b/tests/browser/01_io.js
@@ -178,20 +178,40 @@ module.exports = {
         browser.click("#auto-bake-label");
         browser.expect.element("#auto-bake").to.be.selected.before(1000);
 
+        // Record the transient loader state without polling for visibility at one instant.
+        // The loader is deliberately delayed by 200ms, so waiting to observe it directly is flaky.
+        browser.execute(function() {
+            const loader = document.getElementById("output-loader");
+            window.autobakeLoaderWasVisible = loader.style.visibility === "visible";
+            window.autobakeLoaderObserver = new MutationObserver(function() {
+                if (loader.style.visibility === "visible") {
+                    window.autobakeLoaderWasVisible = true;
+                }
+            });
+            window.autobakeLoaderObserver.observe(loader, {
+                attributes: true,
+                attributeFilter: ["style"]
+            });
+        });
+
         // Add content to the input
         browser.pause(100);
         browser.sendKeys("#input-text .cm-content", "1");
-        browser.waitForElementVisible("#output-loader");
+        browser.waitForElementNotVisible("#stale-indicator", 5000);
         browser.pause(500);
 
         // Make another change while the previous input is being baked
-        browser
-            .sendKeys("#input-text .cm-content", "2")
-            .waitForElementNotVisible("#stale-indicator")
-            .waitForElementNotVisible("#output-loader");
-
-        // Ensure we got the latest input baked
-        utils.expectOutput(browser, "input12");
+        browser.sendKeys("#input-text .cm-content", "2");
+
+        // Wait for the latest input rather than the delayed loading animation.
+        browser.expect.element("#output-text .cm-content").text.to.equal("input12").before(10000);
+        browser.waitForElementNotVisible("#output-loader", 10000);
+        browser.execute(function() {
+            window.autobakeLoaderObserver.disconnect();
+            return window.autobakeLoaderWasVisible;
+        }, [], function({value}) {
+            browser.expect(value).to.equal(true);
+        });
 
         // Turn autobake off again
         browser.click("#auto-bake-label");