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Fixed in 2020.1.X

Fixed in 2019.3.X



Found in







Issue ID




Console window is spammed with warning messages when UI Slider's Min Value is set to greater value than Max Value



How to reproduce:
1. Open the attached '' project using the EnvIronman VM (more information in Edit)
2. Load the 'SampleScene' scene
3. In the Hierarchy window select 'Canvas' > 'Slider'
4. In the Inspector window change 'Min Value' to '2'
5. Observe the Console window

Expected result: no warning messages are printed in the Console window
Actual result: warning messages are spammed in the Console window

Reproducible with: 2017.4.32f1, 2018.4.7f1, 2019.2.3f1, 2019.3.0b1, 2020.1.0a1

Warning message:
SendMessage cannot be called during Awake, CheckConsistency, or OnValidate
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

Comments (1)

  1. makaka-org

    Nov 11, 2019 14:56

    I've checked with Unity 2019.3b10.

    Warning has gone, but as you wrote in change log of b10

    (UI: Values of sliders in the Inspector are now validated on Update rather than on Validate to avoid calling the Clamp function, which triggered a RectTransformChange)

    Clamp function is still here and executes unexpectedly.

    Clamp function here needs to be fixed.

    Tips: Check with different values of slider min & max & value with code.
    Use 2 different range to set in code (-8:8) and (-2:2). Switch between them and set different values with code. You will get wrong work of clamp function.

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