[Bug] Redirect url feature works incorrect

[kholiavkoi]

Summary

The result of redirect url feature is not 50/50, actually it is about 70/30

Expected Behavior

Must be 50/50

Current Behavior

Result is 70/30

[jdorn]

Are you using Google Analytics 4 for event tracking or something else? And are you using the HTML Script Tag SDK or something else?

One of the common issues with redirects are that the page redirects before the tracking event can fire. So what is likely happening is that it IS splitting traffic 50/50, but a lot of the tracking calls to record the variation are being skipped, so it looks unbalanced when you look at results.

We have a navigateDelay setting that defaults to 100ms. if your event tracking library takes longer than that, you may need to increase this delay.

[kholiavkoi]

Here is more detailed info how i add scripts, i use webflow for creating website

<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-000"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());
  
  gtag('config', 'G-000', {
    server_container_url : 'https://example.com/metrics',
  });
</script>

<script async
  data-api-host="https://cdn.growthbook.io/"
  data-client-key="sdk-000"
  src="https://cdn.jsdelivr.net/npm/@growthbook/growthbook/dist/bundles/auto.min.js"
></script>

<script>
	window.growthbook_config = window.growthbook_config || {};
  window.growthbook_config.trackingCallback = (experiment, result) => {
    console.log(experiment, result)
   
    gtag('event', 'experiment_id', {
      experiment_id: experiment.key + ":" + result.key,
      gbuuid: result.hashValue,
    });
	};
  
  window.growthbook_config.navigateDelay = 300
	window.growthbook_config.antiFlicker = true
  window.growthbook_config.antiFlickerTimeout = 800
 
 	window.onload = function() {
    document.getElementById('preloader').style.display = 'none';
  };
</script>

[JohanFactory]

Hey there,

We have the same problem, I was wondering why this difference...

Used the Shopify SDK method and documentation, with GA4.
Simple URL redirect experiment shows this 70/30 issue.

EDIT : well, just noticed the GB js was far before the GA4 js, I changed GB position, let's see.

[kholiavkoi]

@jdorn do i have to increase navigateDelay? for how long? or are there any problems in my code above?