We are using Moodle 2.9. I post SCORM quizzes on a weekly basis for students. An example of the SCORM package it attached.
Within a short period of time of the start of the semester, a number of students were reporting back that they would partially complete a quiz and when returning to it at a later date would find it already marked as completed as a result of which they were unable to attempt any further questions.
Their grades would also be recorded as zero even though they got some questions right. I could see in the Moodle tracking details that some questions were answered correctly but still recorded a zero grade.
After some investigation, my conclusion is that the Chrome browser appears to be problematic. Every one of the students who reported the issue was using Chrome. None of the students who used a different browser reported this issue.
Having said that, I cannot reproduce the issue on demand when I use Chrome. It has occurred for me on occasion but I cannot identify with certainty why it has happened on these occasions
One suspicion is that where the network connectivity is in any way weak, this issue can arise with Chrome. On occasion, the network alert message has appeared in Chrome. Oddly, the network alert would not appear in Firefox even though I would be open the SCORM quiz on Firefox at the same time.
Further, once this issue arises as a result of Chrome, the SCORM player does not function properly in Firefox (41) for the particular SCORM package, i.e., it does not render the quiz. Internet Explorer 11 does to appear to be affected.
Needless to say, the inconsistent behaviour in different browsers, which based on my observations, has its root in Chrome, is highly undesirable.
I'd be thankful to receive advise or suggestions on this.
Thanks.
