Changing interface automatically when active addon

Hi, I am using FF4 , I combine it with addon Web Developer to get convenience when working with CSS . Now I practice with following interface:

Obviously, web title set with color white:

When I active addon Web Developer, It jump to color black?!

update FF

Try IE 6 .

kaaz said
update FF

I don’t think problem belong to FF, I try creating file two files new html and css. It works normally. I am building child theme. Maybe that’s reason, addon Web Developer isn’t smart enough to understand “magic” of Wordpress

Pixelous said
Try IE 6 .

lol made me laugh

but to be honest – I’m using Firefox 15 – you should definitly upgrade first – and if the problem persist than come back here.