SCORM tracking isn't working with the above browsers, causing us lots of support requests by frustrated users. Google has changed the way Chrome works to improve the "user experience" by deprecating a feature that breaks SCORM tracking. This was announced a year ago, so I wonder why this was not address by the Shika team before it became a problem.
The link to the document above provides some temporary workarounds that I hope will help anyone else i.e. those who use SCORM packages having the same experience until Techjoomla has fixed it.