BUG (add 100px to left alignment, it assume there is a field label to the field container):
the simple example I provided Sencha was fixed by the update of 4.2.2. But I updated my big project to 4.2.2 and the alignment is still bad. I'll see if I can recreate the issue in a smaller project and then send it to the Sencha team.
The issue is when I use a FieldContainer with an absolute layout.
concerning my test project, I created index.html to link the 4.2.2 library, but I couldn't send the ext-all.js of 4.2.2 because it was making my zip too big for your server. You have to add it in my project to recreate the issue.