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In Progress

Fixed in 2023.1.0b1

Fix In Review for 2021.3.19f1, 2022.2.X

Votes

1

Found in

2021.1.28f1

2021.3.11f1

2022.1.19f1

2022.2.0b12

2023.1.0a16

Issue ID

UUM-17804

Regression

No

[Mobile] The Scrollbar jumps around and reverses scroll direction when using Touch Input and interacting with UI Elements

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How to reproduce:
1. Open the user’s attached “UiTest.zip“ project
2. Open the “SampleScene“ Scene
3. Enter the Play mode
4. Make sure that “Simulate Touch Input From Mouse or Pen“ is checked in Window > Analysis > Input Debug > Options
5. In the Scene open the “Dropdown“ Dropdown and select the “Option B“ option
6. Move the Scrollbar down

Expected result: The Scrollbar is successfully selected and moves down
Actual result: The Scrollbar jumps down or up after selecting it and the scroll direction gets reversed

Reproducible with: 2021.1.28f1, 2021.3.11f1, 2022.1.19f1, 2022.2.0b12, 2023.1.0a16
Not reproducible with: 2020.3.41f1

Reproducible with these devices:
Huawei - (ELS-NX9), Android 10, CPU: HiSilicon Kirin 990 5G, GPU: Mali-G76
Samsung Galaxy Z Flip3 5G (SM-F711B), Android 12, CPU: Snapdragon 888, GPU: Adreno (TM) 660
Samsung Galaxy S22 (SM-S901B), Android 12, CPU: Exynos 2200, GPU: Ltd.
VLNQA00494 - iPhone 14 Pro Max, 16.0.3 iOS
VLNQA00358 - iPhone 12, 14.1 iOS
VLNQA00392 - iPad (9th generation), 15.0 iOS
VLNQA00310 - iPad Pro 12.9", 13.4.1 iOS

Reproducible in: Editor’s Play mode (Windows 10, macOS)

Not reproducible with: Standalone Player (Windows, macOS)

Note:
- Couldn’t find regression in 2021.1 stream due to errors when using UI Toolkit
- The issue is also reproducible when interacting with the UI Button

  1. Resolution Note (fix version 2023.1.0b1):

    Fixed for 2023.1.X: [Mobile] The Scrollbar jumps around and reverses scroll direction when using Touch Input and interacting with a Dropdown

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