There's a mail with an attachment & a very long value in the To: header. To display the header correctly plus the attachments pane to the right of it, mozilla expands its window, so that it gets wider than the screen size, if it is already maximized. Expected behaviour: Mozilla should stil right-align the attachments pane, but it should also wrap the values of long headers. Will attach screenshot.
Oops... Ii's been a while since my last bug report and I forgot... I'm using mozilla 2001120721 on linux.
*** This bug has been marked as a duplicate of 91662 ***