Extra letters on keyboard typing

Hello and welcome to Apple Support Communities fitzpsh,

We see that you're having an issue with your keyboard after updating to macOS Catalina. We know how important it is to have your Mac working properly, and we'd be happy to look into this with you.

Let's start by having you start your Mac in safe mode and test to see if the issue remains. If the issue remains in safe mode, create a test user and test one more time. The articles below will guide you through these steps, if needed.

How to use safe mode on your Mac

How to test an issue in another user account on your Mac

Let us know how this goes and if you notice any changes.

Have a great day!

Hello fitzpsh,

Thanks for the additional information. You mentioned that you tested in safe mode and things worked normally. Were you able to test in another user account? If the issue does not remain on another user account, try reinstalling macOS. Make sure you have a backup first.

Reinstall macOS

If the issue persists, you'll want to reach out to Apple Support.

Get Support

Thank you for using Apple Support Communities.

Hello fitzpsh,

Thanks for reaching back out to us. We're glad to hear that the issue was resolved by booting in safe mode. However, if you restart you Mac normally, does the issue persist?

We look forward to hearing back from you.