# Bug ? A/B test + campaign decision "email open"

**URL:** <https://forum.mautic.org/t/bug-a-b-test-campaign-decision-email-open/4225>\
**Category:** Product Support\
**Created:** [June 23, 2016, 4:28pm UTC](https://forum.mautic.org/t/bug-a-b-test-campaign-decision-email-open/4225 "2016-06-23T16:28:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![takpaf](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@takpaf](https://forum.mautic.org/u/takpaf)\
**Post date:** [June 23, 2016, 4:28pm UTC](https://forum.mautic.org/t/bug-a-b-test-campaign-decision-email-open/4225/1 "2016-06-23T16:28:42Z")

</div>

Hello,  
  
  
  
I think i 've got a bug or maybe a miss-configuration here. I don t know witch one because i find nothing on the forum… And the bug seems to be a little bit too obvious not to be report ever before.  
  
  
  
I was using in a campaign a decision “email open” to trigger more event afterward, basic use…  
  
  
  
It works well, then it stop working : the decision didn’t trigger anymore BUT mautic was tracking well the opening in the contact history. Every thing else worked (tracking and trigger based on page view, form, etc.).  
  
  
  
I find out that it was an A/B test campaign I activated on the email I used in the campaign that stop the decision to trigger. When i desactivate the B version of the mail : it works fine again…  
  
  
  
  
  
It is easily reproducible, so if some one can validate or invalidate my result.  
  
  
  
Thanks a lot,  
  
  
  
Takpaf.

---

<div class="post-metadata">

**Author:** ![takpaf](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@takpaf](https://forum.mautic.org/u/takpaf)\
**Post date:** [June 23, 2016, 4:28pm UTC](https://forum.mautic.org/t/bug-a-b-test-campaign-decision-email-open/4225/2 "2016-06-23T16:28:42Z")

</div>

Hello,

I think i 've got a bug or maybe a miss-configuration here. I don t know witch one because i find nothing on the forum… And the bug seems to be a little bit too obvious not to be report ever before.

I was using in a campaign a decision “email open” to trigger more event afterward, basic use…

It works well, then it stop working : the decision didn’t trigger anymore BUT mautic was tracking well the opening in the contact history. Every thing else worked (tracking and trigger based on page view, form, etc.).

I find out that it was an A/B test campaign I activated on the email I used in the campaign that stop the decision to trigger. When i desactivate the B version of the mail : it works fine again…

It is easily reproducible, so if some one can validate or invalidate my result.

Thanks a lot,

Takpaf.