Weird looking corners

[Katarshis_2]

Hello!

I have a simple shape, with sharp corners. No Stroke applied. No open paths, everything is joined.

The tips of the corners look weird with max zoom on my MacOS Illustrator 25.3.1. As if I had stroke & butt cap option enabled. Everything looks normal on Windows Illustrator 25.2.3. Maybe it's just visualisation isue & some application preferences need to be adjusted? What am I missing?

[Katarshis_2]

OK, as I understood the issue is purely visual & actually is a long-known unfixed bug with underpowered GPUs. GPU Performance needs 2 b unchecked 4 everything to render properly.

[Doug A Roberts]

Not necessarily under-powered. These things happen with a wide variety of hardware.

[Brad @ Roaring Mouse]

Yes, it's a previewing issue with some Mac GPU's. Even the latest 25.4.1 I installed thsi week exhibits the problem. Turning off GPU is the answer for now. It doesn't affect output, however.

[pixxxelschubser]

It may be helpful to set the pathfinder precision in Pathfinder Panel options to a very low value (eg 0.001)

To test whether it is only a visual "problem", you can toggle between Preview on GPU/CPU with [Ctrl/Strg]+[E].