Visual artifacts on rounded edges of Dock and Launchpad

Hello JasonLikesApple,

Thank you for posting in the Apple Support Communities and for sharing those screenshots. We see what you mean, and we'd like to help.

If you log in to your account using safe mode or in to another user account, does the pixel rendering still appear? If you don't already have another user account set up, we suggest creating a new user account to test the issue further. These steps help identify whether the issue is isolated to something in your user settings or to a more wide-spread issue. Here are the steps:

Start up your Mac in safe mode

Set up users, guests, and groups on Mac

Feel free to reply back with what you discover for additional support.

Kind regards.

Have you made any customizations to System Preferences, especially in Accessibility? Those are most likely to cause these things.

Also, if this is a Mini, you have to deal with the external display. A 2014 Mini? Bummer. All of the above could still the cause. But it also just might not work on that machine.

JasonLikesApple wrote:

On what do you base your assertion that a customization would cause a rendering error in the UI?

Because there are a number of accessibility customizations that change the appearance of the user interface. That does not necessarily mean there is any rendering error.

Perhaps you should reconsider your assumptions and knowledge before responding further.

I was just asking a question. Asking about system customizations is a pretty basic and fundamental troubleshooting technique. Insulting those people who try to help is a pretty basic and fundamental way to avoid getting it.