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Issue with Experiment Results in case of Flag Variation edits

ResolvedminorOfficial source confirmedSpecific component onlyFirst recorded update Apr 29, 2026, 08:19 PM · Resolved May 1, 2026, 12:09 AM

We have validated a fix to resolve all remaining experiments with inaccurate sample ratio mismatches (SRMs) or empty experiment results. The vast majority of experiments and experimentation customers were not impacted.

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Affected services

Experiment results analysisExperiment results processing

Updates (4)

  1. May 1, 2026, 12:09 AM
    Issue with Experiment Results in case of Flag Variation edits

    We have validated a fix to resolve all remaining experiments with inaccurate sample ratio mismatches (SRMs) or empty experiment results. The vast majority of experiments and experimentation customers were not impacted.

    LaunchDarkly ↗
  2. Apr 30, 2026, 12:04 AM
    Issue with Experiment Results in case of Flag Variation edits

    We've released a fix to prevent this issue in new experiments and iterations. We're working to resolve this issue for experiment data recently processed.

    LaunchDarkly ↗
  3. Apr 29, 2026, 08:49 PM
    Issue with Experiment Results in case of Flag Variation edits

    We've identified the issue and are implementing a fix for this behavior.

    LaunchDarkly ↗
  4. Apr 29, 2026, 08:19 PM
    Issue with Experiment Results in case of Flag Variation edits

    We are aware of an issue affecting some customers that may result in sample ratio mismatches (SRMs) or empty experiment results if flag variations are edited between experiment iterations.

    LaunchDarkly ↗

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