I don't know if anyone has asked this or if anyone had this problem and I'm not sure if I should post this problem here, but if I were to describe this strange issue, there is a problem with the game map when you start up and this black outline up above appears after a few seconds. There's no changes to the script, not many plugins been added and I tried turning it off for it to not resolve the situation. This is from version 1.3.3 as I recall.
As for how you get the bug. Just start the game and it'll appear after a few seconds.
Here's a better showcase of the problem:
I'll give the link if anyone wanted to see the problem via download. I made sure to reduce it to less than 90 MB:
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http://www.mediafire.com/file/3qh58x8cvx16481/ProjectTest.rar