TOPIC: Text Fields and Security fields have no border

I've updated to the latest 2.6.4 (that's what I started with, but perhaps there was a minor update, so I uninstalled and started over).

The text fields and security field still have no border. I'll check back on Monday/Tuesday. Have a nice weekend.

Then your issue is template-related. Something in your template is adding a styling to those field types, telling them to have no border. Not a DT Register issue. Check out the form field styling in your template.