diff --git a/.github/workflows/browsers-debug.yaml b/.github/workflows/browsers-debug.yaml
new file mode 100644
index 000000000..353cdac14
--- /dev/null
+++ b/.github/workflows/browsers-debug.yaml
@@ -0,0 +1,48 @@
+name: browsers-debug
+on:
+  # Or manually
+  workflow_dispatch:
+  # Or when developing this workflow
+  push:
+    paths:
+      - .github/workflows/browsers-debug.yaml
+      - build/browserstack-debug.json
+
+jobs:
+  run:
+    name: BrowserStack
+    if: ${{ github.repository == 'qunitjs/qunit' }} # skip on forks, needs secret
+    runs-on: ubuntu-latest
+    env:
+      PUPPETEER_DOWNLOAD_PATH: "${{ github.workspace }}/.puppeteer_download"
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.npm
+            ${{ github.workspace }}/.puppeteer_download
+          key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Use Node.js 18
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18.x
+
+      - name: Prepare
+        run: |
+          npm ci
+          npm run build
+
+      - name: Tests
+        run: npm run browserstack
+        env:
+          BROWSERSTACK_JSON: build/browserstack-debug.json
+          BROWSERSTACK_USERNAME: "${{ secrets.BROWSERSTACK_USERNAME }}"
+          BROWSERSTACK_KEY: "${{ secrets.BROWSERSTACK_KEY }}"
+          # Set "project" metadata
+          TRAVIS_REPO_SLUG: "${{ github.repository }} ${{ github.event_name }}"
+          # Set "commit" metadata
+          TRAVIS_COMMIT: "full ${{ github.ref }} ${{ github.sha }}"
+          TUNNEL_ID: "${{ github.event_name }}-full-${{ github.sha }}"
diff --git a/.github/workflows/browsers-full.yaml b/.github/workflows/browsers-full.yaml
index 08a0fd4b3..8c67d68fc 100644
--- a/.github/workflows/browsers-full.yaml
+++ b/.github/workflows/browsers-full.yaml
@@ -9,6 +9,7 @@ on:
   push:
     paths:
       - .github/workflows/browsers-full.yaml
+      - build/browserstack-full.json
 
 jobs:
   run:
diff --git a/build/browserstack-full.json b/build/browserstack-full.json
index 253961770..38af174a6 100644
--- a/build/browserstack-full.json
+++ b/build/browserstack-full.json
@@ -40,41 +40,28 @@
       "os_version": "10.0"
     },
     {
-      "device": "iPhone 8",
-      "real_mobile": true,
-      "os": "ios",
-      "os_version": "12"
-    }
-  ],
-  "@browsers_disabled": [
-    {
-      "@ref": [
-        "https://github.com/browserstack/browserstack-runner/issues/245",
-        "Android 4, Android 5, Android 6"
-      ]
+      "os": "android",
+      "os_version": "7.0",
+      "device": "Samsung Galaxy S8",
+      "real_mobile": true
     },
     {
-      "@ref": [
-        "https://github.com/browserstack/browserstack-runner/issues/226",
-        "Android 7-10",
-        "iOS 13, 14"
-      ]
+      "os": "ios",
+      "os_version": "11.0"
     },
     {
-      "device": "Samsung Galaxy S7",
-      "real_mobile": true,
-      "os": "android",
-      "os_version": "6.0"
+      "os": "ios",
+      "os_version": "10.3"
     },
     {
-      "device": null,
       "os": "ios",
-      "os_version": "13"
-    },
+      "os_version": "9.3"
+    }
     {
-      "device": null,
+      "device": "iPhone 8",
+      "real_mobile": true,
       "os": "ios",
-      "os_version": "14"
+      "os_version": "12"
     }
   ]
 }
diff --git a/src/core/utilities.js b/src/core/utilities.js
index 12da5bc8c..1547b2182 100644
--- a/src/core/utilities.js
+++ b/src/core/utilities.js
@@ -74,7 +74,7 @@ export function objectValuesSubset (obj, model) {
   return subset;
 }
 
-// Support: IE 11, iOS 7-8
+// Support: IE 11
 export function extend (a, b, undefOnly, allProperties) {
   for (const prop in b) {
     if (hasOwn.call(b, prop) || allProperties) {
diff --git a/src/globals.js b/src/globals.js
index d9f064ac0..1fd4f7ea2 100644
--- a/src/globals.js
+++ b/src/globals.js
@@ -63,9 +63,7 @@ export const sessionStorage = (function () {
   }
 }());
 
-// Basic fallback for ES6 Map
-// Support: Safari 7; Map is undefined
-// Support: iOS 8; `new Map(iterable)` is not supported
+// Basic fallback for ES6 Map and `new Map(iterable)`
 //
 // Fallback for ES7 Map#keys
 // Support: IE 11; Map#keys is undefined