Assegnate 5 su 5 stelle

I installed the 3.2 version, and when I go on Help and troubleshooting page, the page in the top part has got some lines on the black background, is it normal?

Questa recensione riguarda una versione precedente (3.1.5) del componente aggiuntivo. 

yes it is. It s a background image which is repeating. It s like the one you have on this website. I did it to make like a reminder, because Mozilla is using those strips on its different websites. So I found nice to make it, because they created this software and I wanted to add a little something they use often in their graphic identity.