Reproduction steps:
1. Download and open the attached project "1222914.zip"
2. Open the Sample Scene
3. Open LeakTouchInput script in Visual Studio
4. Add a breakpoint to line 12 and attach the debugger to Unity
5. Enter Play mode
6. Press anywhere on the Game window using a touchscreen monitor
7. Press Continue multiple times in Visual Studio

Expected result: Breakpoint is not triggered after the touch input has ended
Actual result: Breakpoint is triggered every frame

Reproducible with: 2017.4.37f1, 2018.4.18f1, 2019.3.4f1, 2020.1.0a25, 2020.2.0a1

Reproduced on: Dell P2418HT

Notes:
The issue does not reproduce all the time but rather consistently (3 out of 5 times).
The touch is only cleared on editor restart.
The user has reported that the issue can be reproduced without debugging, however, this happens inconsistently.