UMG Button bug?

There seems to be a bug with the the OnPressed Event with the UMG Button. If I click and hold the button(or touch on mobile) it will fire the released event after a few seconds. Oddly it does not fire the release event if I move my mouse or finger slightly while holding it down. Can anyone confirm this or know a possible fix?

In the screenshot I DO NOT release the button.

Mouse test works fine. Also I have the issue on my mobile device so it’s definitely not the mouse. I created a new project with the settings in my screenshot. I’m using version 4.17. In the clean project i still have the same issue.