This effect is called z-fighting in 3D graphics. Either you have two (or more) overlapping surfaces there, or for some reason highlighted face is displayed using different triangulation than the same face in main object.
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Abnormal display of faces
Hello everyone, I’ve encountered an issue as shown in the attachment. For the same Shape, when hovering the mouse to highlight or clicking to highlight different Faces, one of the faces displays abnormally, looking like it’s broken. Could anyone please advise on a solution to this problem?Thank you very much.
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Thank you for your reply! I will look into the reason.