Weird half circle pattern appearing on graphics level 5 and above (I believe this is mobile app specific)

Visual aids:

Game:
I put a place file with this building in the staff only section below

System info:
iphone 13
ram 4 gigs
6-core CPU, 4-core GPU, and 16-core Neural Engine
ios 18 but a very similar bug happened on ios 17 (and still happens) which i already reported so i dont think that changes anything
the similar bug i was talking about above:

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