CSS not rendering on web but is rendering in debugger

Summary

How to get CSS for control extension to render in the browser.

Content

Hello,

We adapted the Oracle Limit Text control extension to work for both single line text and multi-line text. It works perfectly in the debugger, and works well once deployed in the different browsers. However, the border for the text box being rendered by the control extension is not rendering in the browser even though it is rendering properly in the debugger. I've attached screen shots to show the problem and also the extension limitSingleLineText.js code snippet and limitText.css file we are using.  It was working in previous versions of OIA, is this a bug in 20B or has something changed for