Visual fragments showing on shape containing concave curve
MacOs 10.14.6 / Illustrator 25.2.2 + 25.2.1 (Doing it on 2 separate macs.)
Drawing a simple shape (without a stroke, just fill) containing a concave curve (punching a circle out of a square) results in visual fragments being present. If we drop the .ai into indesign or photoshop it's not present, it also doesn't print out, so it looks like it's just a visual rendering thing.
If you give the shape an opacity you see further fragments - it looks as if it can't render the curve.
The glitch does scale at the same rate as the shape. It gets bigger as you scale down and smaller as you scale up - reletive to the size of the shape.

Hi,
Thanks for the information provided to the Illustrator team.
The issue is being tracked and engineering team is working on fixing this issue .
With Best Regards,
Aishwarya G Gadodia
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Aaron commented
Hey can I get some help w this?
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tony cook commented
MacOs 10.14.6 / Illustrator 25.2.2 + 25.2.1 (Doing it on 2 separate macs.)
Drawing a simple shape (without a stroke, just fill) containing a concave curve (punching a circle out of a square) results in visual fragments being present. If we drop the .ai into indesign or photoshop it's not present, it also doesn't print out, so it looks like it's just a visual rendering thing.
If you give the shape an opacity you see further fragments - it looks as if it can't render the curve.
The glitch does scale at the same rate as the shape. It gets bigger as you scale down and smaller as you scale up - reletive to the size of the shape.