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.
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.