Game dont recieve arrows events after I clicked button in UI

Hello, so in my game player controls located in level blueprint (puzzle), player can move by WASD or arrows, or mouse. Input are fine in editor, but in packaged game after I press button in UI (tip about level), I cant use arrows until I click somewhere with mouse, but WASD works fine. Arrows event conneted to same blueprints as WASD, so problem with arrows event recieving.

Hmmm, this is really strange, I created new project with same UE4 version to share problem, but this project dont have problems with arrows input after UI click …

Looks like its a strange UE4 4.22 bug, you can fix it like I did (After button pressed. Self its default engine variable)

If someone interested in how bug looks like - Google Drive