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Fixed in 2020.1.X

Fixed in 2018.4.X, 2019.2.X, 2019.3.X



Found in





Issue ID




Upgrading the project results in missing System.Serializable UnityEvent function



How to reproduce:
1. Open attached project "" in a reproducible Unity version
2. In Hierarchy window, select "ExampleObject"
3. In Inspector window, observe Foo -> Generic Response -> function

Expected result: the functions are not missing
Actual result: the functions are missing

Reproducible with: 2018.4.9f1, 2018.4.12f1, 2019.2.5f1, 2019.2.12f1, 2019.3.0a12, 2019.3.0b10, 2020.1.0a12
Not reproducible with: 2018.4.8f1, 2019.2.0a1, 2019.2.4f1, 2019.3.0a1, 2019.3.0a11
Could not test with: 2017.4 due to old Prefab system

Comments (9)

  1. Marks4

    May 19, 2021 00:16

    Please see this thread: . Is it the same issue? Should a new bug report be made?

  2. sunfl0wr

    Nov 16, 2020 13:24

    Is this confirmed fixed in 2019.4.14f or am I experiencing some other issue?

  3. grahamegw

    Oct 20, 2020 15:49

    Not fixed in 2019.3.6f1

  4. BrianPaden

    Feb 04, 2020 07:03

    Still exists in 2019.3.0f6

  5. Metron

    Jan 08, 2020 15:22

    Not fixed for 2019.3.03f

  6. Elringus

    Nov 22, 2019 10:06

    Any chance it'll be fixed before the first 2019.3 final release?

  7. WhiteGfx

    Nov 20, 2019 13:33

    Must downgrade to 2019.2.4f1 to have event functions with dynamic params inside inspector.

  8. WhiteGfx

    Nov 19, 2019 19:58

    same for 2019.2.9f1,

  9. ababab5

    Nov 14, 2019 16:08

    same here

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