Changes made in Course Presentation are not saved if using Safari and Surface Mode is active. Furthermore if the content is edited in a different browser the editor will not load in Safari anymore (Screenshot 1).
Issue is reported in: https://h5p.org/node/170375
Attached is a screenshot of the browser logs (screenshot 2)
Content created in:
Wordpress V 4.9.1 (users's version) and 4.9.2 (my version)
Safari Version: 11.0.2 (12604.4.7.1.6)
Contents on surface mode can be edited in Safari.