Losing ability to click on widget after re-enabling mouse

In my game, I use the right mouse button to rotate the camera. While the player holds down the right mouse button, mouse cursor is hidden, click events and mouse over events are disabled. When released, they are re-enabled. Until I make another click of the mouse, I can’t click on any UMG widgets.

If I disconnect the disabling nodes, I can right mouse and rotate the camera. Is this a bug?