Hello,
Under Firefox and ExtJS 4.1.1 vertical headers are not properly displayed. (text in example should be: "Formularz pracownika".

I couldnt find related thread so i start a new one.

What can be done to fix it?

bug-ff-header.JPG

to reproduce: (FireFox & ExtJS 4.1.1)

Code:
new Ext.Window({
autoShow:true,
width:200,
height:200,  
headerPosition:'right',
title:'Formularz pracownika',  
collapsed:true,
collapsible:false
});