Bugs in content types

Wordpress (newest version), Desktop, Chrome not working with "Course presentation by Joubel". I can not click complete button (nothing happens after it is clicked). I am using Learndash LMS. Anyone had this problem before?

There is a problem with two H5P Course Presentations:
The user opens the the page and there is no H5P content displayed but a grey line. All other Course Presentations work well.
Unfortunately it is not clear since when the problem exist. Propably it was first detected in January but we do not check all our H5P contents regularly.

Platform: WordPress 4.9.5

Browser: Firefox 57.0.2 and Safari (both Mobile and Desktop)

H5P plugin version 1.10.1

H5P content type and version:
Course Presentation (1.17.9)

For the first time, I just tried to create a set of dialog cards inside a course presentation, but the result isn't so impressive:
even without images on the cards, it's practically impossible to display the cards without the need for an up/down scrollbar as they overflow the height of the course presentation container. 

In the name of usability, any chance you could tweak the height of the dialog cards when in the context of course presentations? (- or even better, allow creators to set the dimensions of the cards to suit them)

Thanks.