My buttons lose keyboard focus if a mouse is clicked

[Everynone]

@StevenHammon

I make sure I control my cursor all the time

The PC has no idea what is happening to the cursor while it’s over widgets:

Hide Mouse - Widget Confusion

I don’t blame you. You’ve got 2 things affecting your cursor visibility. A UMG widget and the Player Controller. Even though you asked the controller to hide it, the widget that the cursor is currently over is overriding cursor visibility. You can test it by executing the code you posted and clicking anywhere outside of the Visible parts of the widget, this will pass the control over the the PC and the cursor should disappear. In order to hide the cursor for good, even while a widget is in fo…

And every widget decides what the cursors looks like and how it behaves. Unless something dramatic changes in UE5 I’m not aware of, that is.