Reproduction steps:
1) Open attached project "MouseBug"
2) Build for android and run
--- Reproduced with Nexus 5X and LG G4
3) Touch various points on the screen
4) Kill the app
5) Run the app again
6) Touch various points on the screen
--- In the log you should see message "Mouse down: True (0.0, 0.0, 0.0)"

IMPORTANT Might not reproduce on the first try, if this happens restart the app. Always reproduces on the second and consequent tries.

Regression since: 5.4.0b2