Bugs in content types

Hi

I recently inherited an LMS site  which is experiencing an error when displaying H5P quizzes in Safari.

The iframe comes back as empty, with no apparent errors in the console, and no apparent related PHP errors.

For now we are directing users to Chrome etc.

Details

Hi All,

First of all, thank you so much because I always benefit from the information I read here. From now on, I'll try to contribute more. I am experiencing a problem that suddenly start to happen. When I try to edit any kind of H5P in a Moodle 3.5.7 I have the same error message. I've turned debugging on and had different messages in my stage and production envionment. Any of you had this problem before? We have many different security configurations on server and different firewalls, do you think that those firewall could be the problem source? 

Hey guys,
I met problem, The toolbar of h5p is flicker when using the feature fullscreen.

1. Moodle 3.7.
2. Desktop.
3. Safari 11.0.
4. MacOS High Sierra 10.13 (Virtualbox).

Flow video below to see details. Hope to know this problem.

Thank guys!