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Issue ID




[UI Toolkit] ClickEvent is randomly not triggered

Package: UI Toolkit


How to reproduce:
1. Open the project from the provided Google Drive link in the edits
2. Build and Run the "Bug" Scene on an Android device
3. In the Build press and hold the button for a couple of seconds then release, press the button randomly

Expected results: The number below the button increases by one every time you press the button
Actual results: The number below the button doesn't always increase by one

Reproducible with: 1.0.0-preview.16 (2020.3.17f1, 2021.1.19f1, 2021.2.0b9, 2022.1.0a6)
Not reproducible with: 1.0.0-preview.14 (2020.3.17f1, 2021.1.19f1, 2021.2.0b9, 2022.1.0a6)
Could not test with: 1.0.0-preview.15 due to UI Toolkit breaking

Reproduced with:
VLNQA00286, Meizu Pro 5 (PRO 5), Android 7.0, CPU: Exynos 7 Octa 7420, GPU: Mali-T760
VLNQA00313, Huawei Y6 Ⅱ Compact (HUAWEI LYO-L01), Android 5.1, CPU: MediaTek MT6735, GPU: Mali-T720
VLNQA00294, Oppo OPPO Reno Z (PCDM10), Android 11, CPU: NOT FOUND, GPU: PowerVR Rogue GM9446
VLNQA00335, Samsung Galaxy S20+ 5G (SM-G986B), Android 10, CPU: Exynos 990, GPU: Mali-G77
iPhone 8 Plus (iOS 14.4.2)
iPad 6th generation (iOS 14.4.2)
iPad Air 2 (iOS 11.0.3)

- Pressing the button quickly will trigger the ClickEvent
- The issue is not reproducible on the Editor and Standalone

  1. Resolution Note:

    Fixed in Unity 2022.1.0a11

  2. Resolution Note:

    Fixed in Unity 2021.2.0b14

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