UMG Widget Set Focus in Standalone broken

Focus is no longer set on UMG 3D Widget when playing in Standalone. (PIE works in both versions)

Also verified in Main CL# 4247867

4.19 Example project attached (Debug is setup for button, editable text is unhooked)

1. Create a Widget BP with a button and assign it to a 3D widget component
2. Place 3D widget in level
3. On begin play, set keyboard focus to button
4. Play in standalone
5. Press spacebar

Expected: Pressing spacebar "clicks" the button. 

UE-62606: Confirmed 4.20 bug for focus on TextFields (only shows up in packaged builds)