Cannot precisely select text after 27.3.1 update

I have a similar system as you, also at 12.6.3 but can't reproduce this behaviour.

Are you talking about text inside a text frame, or individual type objects?

Hello @brianb47562899,

We understand that encountering technical issues can be frustrating. We are here to help and would like to suggest trying to reset Illustrator's preferences as described in this article (https://helpx.adobe.com/illustrator/kb/troubleshoot-preference-issues.html).

Disclaimer: Please note that resetting preferences will remove all custom settings, and Illustrator will launch with the defaults. You may save a backup of these settings from the location mentioned in the article.

If the issue persists, kindly share a sample file and a screen recording so we can investigate this further. We appreciate your time and effort in helping us resolve this issue.

Looking forward to your response.

Thanks,

Anubhav