Macbook Air, Scrolling Crazy

"Macbook Air, Scrolling Crazy: New MacBook Air (less than a month old) looks like the right arrow key is stuck, but it does not appear to be...Any ideas?"

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Thanks for the video.

A. Single-Out this Trackpad:

Use an External Mouse: Any difference? If the right arrow key is stalled, then it is a bug in the iOS or the current user, or it is a hardware issue.

B. Single-Out this User:

For troubleshooting purposes, create an Administrator user, and se if you get this error. If not, then it is an issue pertaining to the current user. If so, then it is an issue with the macOS. Trash this Administrator user you've just created.

C. Boot in Safe Mode:

See what happens when you boot in Safe Mode. Go here: Start Up your Mac in Safe Mode - Apple Support

New MacBook Air (less than a month old) ...

It's in warranty. If TheLittles' steps do not work, have Apple evaluate.