Site "Thank you button"

John8703

Is anybody having trouble with the MSE site "Thank you buttons". When I press it to say thank you to competition posters it used to highlight then move to the right. Lately it has been performing erratically, sometimes it highlights but does not move and when I try to return to the home page the page is am on refreshes and the highlight disappears as if I had not pressed it. It does not do it every time, do you think that it is my computer or is the problem on the site?