The hole is created split by half

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08-30-2021
06:48 AM
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I am creating a standard hole on a body created by revolving a shape. On one face of the body hole is created split with a diameter line (which is created as a physical line) and consists of two arcs. The shape itself looks like underneath the face it was intended to start from, and the hole is barely visible.
Creating holes on other faces does not result in such a behaviour.
Please help mу to find out what is wrong with the face/body.
The file with problemous model is attached.