It's been doing it on-and-off for a long while. It isn't your computer. I have no idea why it only does it some of the time.
BTW, the fada on my name has been displaying for me properly for a few months now.
What he said, but it's only been happening to me for the last 6-8 weeks or so. It only seems to do it on the PC at home - I don't recall seeing it on the work PC or my mobile phone. Could it be a Firefox issue? There have been some Firefox updates recently, and the problem hasn't appeared since the update was done.