Space left when adding H5P to Moodle

Hello there! I do experience the following "error" when using H5P in our Moodle platform. 

The chosen application works fine, yet it seems that there's a grey line on the left side of the screen which I cannot erase.

I've added a sample file as attachment but this happens with basically every H5P file. 

 

?ve added as well a screenshot of what I see (the grey section, which I believe is part of the whole Moodle background, yet why should I see it?)

 

thank you very much for your reply

Buenas tardes

Yo tengo basicamente el mismo problema, pero veo una franja gris por encima de la ventana de H5P, lo cual hace que no se visualice la parte inferior de la actividad. Tengo el rol de profesor por lo que no puedo acceder a la configuracion de Moodle, pero mi administrador no ha conseguido encontrar la solucion al problema.

Agradecería una respuesta pronta

gracias