Problem with "word progress" graphic bar
I'm having some issues with "word progress" bar. I stopped duolingo for like a week or so, and today came back. Suddenly, the bars look kinda weird: http://s22.postimg.org/f3ut7fmyp/Capture.png Sometimes, the first gold tile is filled, and when I hover my mouse it dissapears (leaving only thin frame). This happens everywhere, even there: http://s9.postimg.org/ezio1prtr/Capture.png I noticed other graphics glitches, like dissapearing background. It's really confusing, because I don't know which words I need to repeat...
I'm using Firefox and it appears that the problem is with all gold fillings.
Thanks for all the details. What version of firefox are you using? Click 'firefox' and 'about firefox' to find out. That'll help us! Thanks.