Clicking on object causes EndInputTouch to fire on the press instead of the release

When clicking on an object EndInputTouch sometimes fires on the press instead of the release. This was not an issue in 4.19.2 (CL-4033788) and is a regression. However the functionality doesn't appear to work at all in Main 4.21 (CL-4370874)

This was tested and reproduced in 4.20.2 (CL-4302132).

1. Open the UE4 Editor and create a Top Down template project
2. In Project Settings enable Input > Use Mouse For Touch
3. Choose one of the grey cubes in level and create blueprint from it using blue button Blueprint/Add Script
4. In the Blueprint create an EndInputTouch event and connect it to a Print String
5. Play, run around the cube and then click on it

Results: EndInputTouch fires when object is pressed and released.

Expected: EndinputTouch event will activate only when mouse button is released on the object.