When trying to edit a view by clicking the 'Edit view' link in the structure tab nothing is displayed..
Firebug console gives the following error.
$("iframe[class='IE_hack']").width($after_field.width()) is null
I saw this problem but it seems fixed in current master, can you confirm?
No, it does not seem to be fixed. Tried on the demo server with sakila.actor_info using both FF and Chrome.
Looking at the error message, it looks like $after_field refers to the dropdown that let's you chose where your new column is added and this dropdown is present only on the structure page of the tables, but not views.
This bug was fixed in repository and will be part of a future release; thanks for reporting.