SCORM navigation is broken due to a regresion caused by MDL-68792.

The code in mod/scorm/module.js relies on page-content or content ids to exist in the page:

https://github.com/moodle/moodle/blob/MOODLE_311_STABLE/mod/scorm/module.js#L856-L857

To solve MDL-68792 page-content id was removed from the embedded.mustache template:

https://github.com/moodle/moodle/commit/8325c83b20b337a9517501b879194f004a3df06c#diff-97a6778cdf99802a612717b7ebb600768b720ddc9e10f0a2b2bfe1183a486a4d

Causing a javascript error (pagecontent is undefined) when a navigation node is clicked:

https://github.com/moodle/moodle/blob/MOODLE_311_STABLE/mod/scorm/module.js#L864