All labels (field names) in Classic UI are showing in upper case, is there an option to change them to standard case?
Release : 16.0.2
Custom UI Theme being used.
Definition of UI Themes can be obtained from Administration -> Studio -> UI Themes. In the OOTB themes that are provided, all the field names / labels use standard cases. You can switch to one of the OOTB themes to verify.
So, to change the field labels in a custom theme, edit it and make appropriate changes.