IsInputKeyDown and UMG

When I click on a UMG element IsInputKeyDown always return false, until I again press on the selected key. Also i tried use key event with boolean(Pressed - true, Released - false), but it too dont work: after click on a UMG the key event goes into the released state.

edit: found a temporary solution - just set to false isFocusable in widget. But maybe someone knows a different solution, because a few of our widgets require the ability to get focus?