diff --git a/spec/mocha.helpers.js b/spec/mocha.helpers.js
index e3ee9060..fb7ac900 100644
--- a/spec/mocha.helpers.js
+++ b/spec/mocha.helpers.js
@@ -1,5 +1,6 @@
 /* eslint-disable import/no-unresolved, import/extensions */
 const qs = require('qs');
+const sinon = require('sinon');
 const store = require('../test/utils/store');
 
 // Trigger browser resize event
@@ -21,7 +22,8 @@ const triggerResize = () => {
 const triggerUnload = () => {
   const unloadEvent = document.createEvent('Event');
 
-  unloadEvent.initEvent('beforeunload', true, true);
+  unloadEvent.initEvent('visibilitychange', true, true);
+  sinon.stub(document, 'visibilityState').value('hidden');
 
   global.window.unload = () => {
     global.window.dispatchEvent(unloadEvent);
diff --git a/src/utils/request-queue.js b/src/utils/request-queue.js
index 02146c9a..50d9882c 100644
--- a/src/utils/request-queue.js
+++ b/src/utils/request-queue.js
@@ -19,9 +19,18 @@ class RequestQueue {
       ? true
       : false; // Defaults to 'false'
 
-    // Mark if page environment is unloading
-    helpers.addEventListener('beforeunload', () => {
-      this.pageUnloading = true;
+    helpers.addEventListener('visibilitychange', () => {
+      // Mark if page environment is unloading
+      if (document.visibilityState === 'hidden') {
+        this.pageUnloading = true;
+      } else if (document.visibilityState === 'visible' && this.pageUnloading === true) {
+        // Send events once page is visible again
+        this.pageUnloading = false;
+
+        if (this.sendTrackingEvents) {
+          this.send();
+        }
+      }
     });
 
     if (this.sendTrackingEvents) {
@@ -182,7 +191,7 @@ class RequestQueue {
       if (this.options && this.options.trackingSendDelay === 0) {
         this.sendEvents();
       } else {
-        // Defer sending of events to give beforeunload time to register (avoids race condition)
+        // Defer sending of events to give visibilitychange time to register (avoids race condition)
         setTimeout(this.sendEvents.bind(this), (this.options && this.options.trackingSendDelay) || 250);
       }
     }