Repro steps:
1. Open atttached project "TouchReproIssues"
2. Build and Run on Android/iOS
3. Touch any on the buttons
4. Without releasing scroll the view
5. Release

Expected: Button doesn't get clicked
Actual: A click is registered after scrolling

Reproducible with: 2019.4.26f1, 2020.3.7f1, 2021.1.6f1
Not reproducible with: 2021.2.0a1, 2021.2.0a17

Tested and reproduced on these devices:
VLNQA00288, Samsung Galaxy J7 (SM-J730F), Android 8.1.0, CPU: Exynos 7 Octa 7870, GPU: Mali-T830
VLNQA00001, Google Pixel 2 (Pixel 2), Android 11, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76
iPhone 11 (iOS 13.5)

Doesn't reproduce on:
N/A, Google Pixel 3 XL (Pixel 3 XL), Android 11, CPU: NOT FOUND, GPU: Adreno (TM) 630
N/A, Huawei - (NOH-NX9), Android 10, CPU: NOT FOUND, GPU: Mali-G78

Notes:
- Couldn't test 2018.4 (no UI Toolkit)