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Fixed in 2020.1.X

Fixed in 2019.3.X



Found in




Issue ID




Prefab variant's Button component's OnClick() events are missing parameters when upgrading to Unity 2019.3.0a12 and above

Scene Management


How to reproduce:
1. Open the attached project in Unity 2018.4.15f1
2. Select "MenuMainViewDevices" Prefab from the Project Window
3. Open a copy of the project on a newer Unity version
4. Select "MenuMainViewDevices" Prefab from the Project Window
5. Compare the Prefab side by side with different Unity versions in the Inspector

Expected result: Button Onclick() events are not missing any fields
Actual result: Button Onclick() events appear to have empty parameters and can't be edited

Reproducible with: 2019.3.0a12, 2019.3.0f4, 2020.1.0a18
Not reproducible with: 2018.4.16f1, 2019.2.17f1, 2019.3.0a11
Couldn't test with: 2017.4.36f1 (Issue happens when upgrading)

  1. Resolution Note (fix version 2020.1):

    Fixed in Unity 2020.1.0a24

  2. Resolution Note (fix version 2019.3):

    Fixed in Unity 2019.3.4f1

Comments (2)

  1. Ubiant

    Jan 20, 2020 09:16

    As I mentionned it in my ticket, there is nothing related to Odin. You can remove Odin before upgrading it to 2019.3.0fX and the issue still occurs.

    I will reupload a bug without Odin and let you check it...

  2. jashan

    Jan 14, 2020 17:10

    This one currently keeps me from moving my project to Unity 2020 (or even Unity 2019.3).

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