Optimizely Full Stack (Legacy) Release Notes 2023

  • Updated

The following is a cumulative list of enhancements and major bug fixes for Optimizely Full Stack (legacy). Because Optimizely Experimentation releases new features and fixes as soon as they are ready, this list will update regularly. Follow this article to receive notifications as soon as new content is added.

These release notes are for Optimizely Full Stack (Legacy).

For the latest version of Optimizely Full Stack, and the default for new projects since February 2021, see Optimizely Feature Experimentation's release notes.

August 2023

New release

Experiment Collaboration is designed to help teams manage their experiment ideation, planning, and hypothesis-creation process more effectively. You can currently link your Optimizely Full Stack (Legacy) experiments to your Hypothesis through your experiment URL. Learn more and create your first hypothesis by following the seven steps to set up Experiment Collaboration.

May 2023


  • The Optimizely Full Stack Experimentation Flutter SDK is now in general availability.

Bug Fixes

  • Fixed a bug where Something Went Wrong would appear on the Experiments overview page.
  • Fixed a bug where the percentage completed for project migration from legacy Full Stack to Feature Experimentation would return to 0%.
  • Fixed a bug where you could delete a variation in non-production environments during a running experiment instead of just being able to pause them.
  • Fixed a bug where the Jira integration would not appear in projects.