Problem with capital letters

I have a problem with capital letters. When you enter the web, in the extracts, they are seen correctly.

However, once the entry or post is open, it is overwritten with the first word, leaving it quite ugly.

Tengo un problema con las mayúsculas. Cuando entras en la web, en los extractos, se ven correctamente.

Sin embargo, una vez abierta la entrada o post, se sobreescribe con la primera palabra, quedando bastante feo.

The page I need help with: [log in to see the link]