How to remove the text formatting of &APP_USER. in the APEX Navigation Bar

How to remove the text formatting of &APP_USER. in the APEX Navigation Bar

Have you noticed, when you log in with your uppercase username, it displays it in lower-case in the navigation bar?

I take some time to analyze this behavior and found the Theme itself is applying the lower casing with CSS.

.t-NavigationBar-item.has-username .t-Button-label {
  text-transform: lowercase;
}

To restore the original text, all you need to do is head over to:

Shared Components > Navigation Bar List > Navigation Bar > &APP_USER.

Then scroll down to the User Defined attributes and you'll find this List Item CSS Class in slot #2.

Just remove the entry to make it blank

Then Apply Changes to the page & refresh your APEX Application

Voilá