I know what you are describing, because I have had the same thing reported twice by OU students (with screen-grabs). That is out of several thousand students how have successfully used these questions.
And so far, I have been unable to work out what is happening. Here is what I have learned so far:
- This is what you see when the question's JavaScript fails to run.
- When this happens, there are no JavaScript errors displayed that might help us diagnose or fix this.
- However, if you see this problem, please double-check that fact, and do your best to find an error message.
- When somone hits this problem, the experience the problem in all web browsers (well, Chrome, Firefox and Internet Explorer).
- That in itself is very weird. Normally JavaScript bugs only affect one type of browser.
- In both cases we encountered, the student in question was eventually able to try a difference computer, and then it worked.
- Since the OU's theme displays some user-specific information in the header bar, it was concievable (but unlikely) that this was breaking things for certain user's log-in. This observation rules out that possibility.
That is as far as I have got with this problem.
It would appear that the problem is certain computers, or perhaps those computer's connection to the Moodle server. To confirm that diagnosis, I suppose we should get a second student to log in to the problem computer and try the quiz, but I have not been able to arrange that with any of our students.
How could this happen, my leading guesses are:
- the computers have particular firewall settings, or some sort of pop-up blocker installed that is causing this effect.
- the computers in question are connected to the internet through and ISP that does some weird filtering or something like that.
If you are seeing the problem, and can get your hands on the computer where the problem happens, it would be really great if you could investigate. Thanks.