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Fixed

Fixed in 2021.3.31f1, 2022.3.10f1, 2023.1.14f1, 2023.2.0b10, 2023.3.0a5

Votes

0

Found in

2021.3.27f1

2022.3.2f1

2023.1.0f1

2023.2.0a15

2023.3.0a4

Issue ID

UUM-40352

Regression

No

ScrollView produces jittery animation when playing PostPointerUpAnimation

--

-

In line 1574 of “ScrollView.cs” ([https://github.com/Unity-Technologies/UnityCsReference/blob/2023.2/ModuleOverrides/com.unity.ui/Core/Controls/ScrollView.cs#L1559)|https://github.com/Unity-Technologies/UnityCsReference/blob/2023.2/ModuleOverrides/com.unity.ui/Core/Controls/ScrollView.cs#L1559)|smart-link]) PostPointerUpAnimation is executed every 30ms (schedule.Execute(PostPointerUpAnimation).Every(30)) which produces jittery animation.

The user suggested changing “.Every(30)” into “.Until(() => false)” which would execute animation every frame and produce far better results.

Reproducible with: 2023.2.0a15 (by the reporter)

Reproducible on: Windows 10 (by the reporter)

Notes:

- Not reproduced by CQA

- Forums mentioning the issue: [https://forum.unity.com/threads/scrollview-has-a-few-bugs.1162652/|https://forum.unity.com/threads/scrollview-has-a-few-bugs.1162652/], [https://forum.unity.com/threads/scrollview-value-changed-callback.1441750/#post-9048712|https://forum.unity.com/threads/scrollview-value-changed-callback.1441750/#post-9048712]

  1. Resolution Note (fix version 2023.2.0b10):

    Fixed UUM-40352 @laila-chammaa:
    UI Toolkit: Fixed ScrollView produces jittery animation when playing PostPointerUpAnimation.

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