Bugs in content types

Hi, 

We added some language subtitles to Video content, but in Internet Explorer 11 they don't work at all. We could choose what subtitles view, but on the video we see nothing. We use H5P on Moodle. The library versions are: "Interactive video" 1.19.5, "Interactive Video Editor" 1.19.4, "Video" 1.4.2.

Same video in Chrome, Edge, Firefox is ok.

Someone has encountered same problems?

Thank you very much!

Roberto

When ever I exceed 20 fill in the blanks, the page will sit on the verification of check until a unrepsonsive error pops up. Is there a limit to the fill in the blanks one can use. It seems like it takes about 10 seconds to check the 20 blanks, anything beyond that does not work. 

I created a drag/drop in which one drag zone had multiple draggables. When I completed the activity, even though all answers were correct, it didnt give me full credit for completing the activity. Showed 0 out of 1 or 10 out of 12 even though ALL drag zones were correct. Is there a possible solution to this or an enhancement request on file?