Arena War Invisible Peds | Cars | Objects Problem

AlexKK

So I wanted to explore Arena War with cars and a war of peds maybe. But i noticed that they are invisible in the arena but visible outside of the arena.

Visible here:
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Invisible here:
alt text

Same with cars:
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I wonder what is making this happen and how to fix it. Or a mod that fix this issue. Because it would be cool to use the Arena Mod for some wars and benchmark.

Let me know if you can help me!