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Fixed in 2019.4.X

Fixed in 2020.3.X, 2021.1.X, 2021.2.X



Found in






Issue ID




A loop of Prefab AutoSave begins when adding a Parameter to Analytics Event Tracker in Prefab Editing mode



Steps to reproduce:
1. Open the original project ""
2. Navigate to Project -> Assets and open "TestScene"
3. Select "Image" and enter Prefab editing mode
4. Navigate to Inspector window -> "Analytics Event Tracker" component -> "Send Event" and add a Parameter
-- Notice how Prefab starts to autosave frequently

Expected results: After changing a Prefab it will Autosave 1 time
Actual results: After changing the Prefab a loop of Autosave occurs

Reproducible with: 2018.3.14f1, 2018.4.0f1, 2019.1.0f2, 2019.1.1f1, 2019.2.0a12, 2019.2.0a14, 2019.3.0a1
Not Reproducible with: 2017.4.26f1, 2018.3.13f1, 2019.1.0f1, 2019.2.0a11

Note: In Unity version 2018.3.14f1 there is no need to Enter Prefab edit mode for this bug to occur

  1. Resolution Note (fix version 2019.4):

    Update to Analytics Library package version 3.6.11

  2. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.20f1

  3. Resolution Note (fix version 2019.4):

    Fixed in 2019.4.31f1

Comments (1)

  1. unity_0E2620DC1E33ADE0A5D4

    Apr 09, 2021 15:33

    Unity 2019.4.15.1f
    Same bug occurs randomly when trying to save prefab in regular editor

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