@murrayjames & @seamus5,
Are these problems persistent for you guys, or are they one-time issues that go away the next time you open the review? i.e. do you need to do a soft reset on Safari to make the problems go away, or just closing the popup and reopening it solve the problem?
Anyway -- it would be good to confirm whether or not these problems require a soft reset to solve on your machines in order to try and figure out what the exact problem might be and how we can work around it. We should probably code a listener that will catch failed attempts to fetch questions and reissue requests after a certain number of seconds have passed.