Long form fields

In the rare instance where a user has a field with a large field name label, the drop down box to select/add new fields is set to grow to the size of the biggest label. This unfortunately pushes the other fields off of the screen, and makes editing items on this page extremely difficult. Of course, the simple answer is for the user to make the field name shorter, but maybe they want a long field label…

I think if this label were fixed at 500 pixels wide, it would still allow the user to get a clear indication of which field he were choosing, without pushing everything else off of the page.