Secondary Jagged Stroke
Mac OS Monterey 12.0.1
Illustrator 26.0.1
I have been drawing lines with the line tool and expanding and bending them using the Anchor Point Tool. Sometimes Illustrator creates a secondary line alongside my smooth one that is jagged. It is still visible if I zoom in or out but I don't think it's really there (as a vector path). It is visible in the middle of my screenshot.
Philip
shared this idea
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Brad Russo commented
OS MacOS Ventura 13.2.1
M1 Pro Macbook ProPlease see attached illustrator file
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There is an issue when applying a stroke on curved lines in Illustrator 27.3.1
This is visible with strokes of 3pt and under. As the stroke decreases in thickness, the graphical error become more dramatic.
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Aaron Firouz commented
I've been experiencing this same behavior on my new 2021 MBP 14" (M1 Pro) with the latest OS (Monterrey 12.1). A lot of my artwork has "junk" along curved lines. As Egor mentioned, this only happens when GPU acceleration is enabled; disabling it seems to 'fix' the problem. See the attached screenshots.
I didn't notice this on my Intel MBP, but I didn't use it much and mostly used Windows PCs before this; I never noticed this problem on Windows.
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Philip, it's one of many existing GPU rendering bugs Ai has.
Can you make a copy of your file, remove everything that does not influence the bug, and share it here?
