Google optimize A/B testing weightage not working properly

Question

I am using Google optimize A/B testing on my website, I've kept 3 different variants for the same, I am dividing all the weightage among these new variants & giving 0 weightage to my original variant, still, sometimes I'm getting the original page.

Does anyone have any idea why is this happening?

Answer 1

It could be due the target rules

An example would be if your page is visible as both www.example.io/original.html and example.io/original.html

Also, you need to take about the session if you are managing any,

If you change the weights after the experiment starts (i.e. you set the Variant 1 to 100%) then all the returning visitors that were assigned to another variant or the original will remain there and see that.

Read more at. : https://support.google.com/optimize/thread/7450936/in-weighting-does-100-really-mean-100?hl=en