Hi,
Short:
Blue are the actual buttons, but the clickable area is shown in red.
Long:
I made a UMG widget with two buttons in a vertical box, added it to a blueprint, and set it to world space. I also use the ‘Set Input to Game Mode and UI’ node and the draw size of the widget in the blueprint is equal to the widget size in the designer (1920x1080).
When playing, the clickable areas of the buttons are as shown in the image below.
EDIT: So after doing some more experimenting, I’m pretty sure the hitboxes are ‘simply’ rotated by 90 degrees clockwise, since it actually seems to have the exact same dimensions as the buttons.
What could be the problem?
The Widget Designer screen: