Bugs in content types

I have a wordpress LMS which has WP Rocket. For some reason some H5P content such as interactive videos and voice recording don't show on the fist page load, but on the second or sometimes even on the thir refresing of the page. I don't know if this has to do with the fact that the H5P content is on a woocommerce product page or some setting in WP Rocket.

Here it's an example page: https://www.langcom.org/product/basic-01/

Looking forward to your replies.

Hi All,

 Running a brand new Drupal 7.59 instance with only H5P & LIbrary modules. I am experiencing some strange behavior when I try to create new items using Image Hotspots (1.6.2) and Course Presentation (1.17.10 + CPE v 1.17.7).

When I create a new Image Hotspots item, I get the screen in the attached image. I also attached an image of the course presentation initial load page.

I have aso tried to import existing, working items. Imports fine, never renders.

Hi! I have placed drop zones and images for several tasks and it worked fine. Now I can see that some drop zones have moved by themselves to a wrong position. I have made several attemps to put them back again by moving them and press update button. Still they don't remain in the corrected postion. What has started to go wrong? I am om MacBook Air and it's the same in Safari as in Chrome. Thanks! / Momiji