I searched extensively for any mention of this issue, but found none. But this has happened on not just 1 but 3 separate computers I have play testers attempted. I have seen this several times, but this bug is intermittent. The game is set to fullscreen with the engine level checkbox. Game Options - Windows -> Graphics ->  Start fullscreen This happens with the executable, I have not seen it running for the IDE. Executable made into .zip, not install. (this may or may not matter) Sometimes. but not always. it loads smaller than the whole screen. with a boarder around the edges where the background desktop can be seen. When this happens, interaction with the screen indicates that the screen is scaled fully. Thus buttons you think you are clicking you are missing because they appear in a different place than they are. I am assuming this is an engine level issue. There must be work around / solution. This bug is too big for anyone to be releasing products.