Mouse cursor doesn't react with Widget menu

Hi, It looks like in 4.14 I’ve got a problem with using buttons in my widget menu.

When I’m in game and I create widget menu, cursor is visible but doesn’t react with the button…if I click START on Windows and then activate the aplication by clicking on upper bar, it works but I can’t “click into” the game…any help please ?

Thanks

Hi, so I’d like to thank Eduard Gelbling and his answer…

So this is screen of blueprint which will help you to make it work fine: