Kelly Tuesday wrote:
I just purchased a new 14" MacBook Pro '21 and updated it to Monterey 12.1. Immediately and unpredictably, colored box outlines would appear. Colors are most often red but sometimes other ones. I could usually type letters but not add spaces. This most often happens in Pages, but sometimes they show up randomly, as when I signed in this a.m. and a purple outline briefly appeared on the screen. It also happens randomly when I am writing online like this, as well as in Numbers, Apple Mail, and Thunderbird. The Applecare tech wanted me to reset the NVRAM and dropped a link in the chat, which linked to an Apple support page which said the article applied to Intel Macs only. Looks like the M1 chip computers have no way to manual reset the NVRAM. Anyone have an idea of what may be going on and what to do about it? Thanks.
I would look at >System Preferences>Accessibility and verify nothing got turned on there
Use the Accessibility Options panel on Mac - Apple Support
To trouble shoot further you can:
—Try a SafeBoot https://support.apple.com/en-us/HT201262
Takes noticeable longer to get to the login screen, does a 5 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc.
Login and test. Reboot as normal and test. Caches get rebuilt automatically.
In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.
This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.
—Test issue in another user (or guest user) account https://support.apple.com/guide/mac-help/set-up-other-users-on-your-mac-mtusr001/mac
This will tell you if it a universal issue or isolated to your user/admin account.
Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus
all known to cause issues on the macOS
