There are currently two options possible:

1. Either we change the code for all users within flex-horseshoe-card.js on both lines:

     536: text-transform: uppercase;
     546: text-transform: uppercase;

2. Or you manually edit your css-style for each affected card:
   within the "names", "states", "areas" section you add the following for styles:

      names:
        - id: 0
          entity_index: 0
          xpos: 50
          ypos: 85
          styles:
            - font-weight: normal;
            - text-transform: none;
            - font-size: 20;
            - opacity: 0.6;

I'd definitely prefer option 1, since HA cards by default do not transform your text input. Users still have opportunity to capitalize names and areas within their input or through option 2.