Comment 3 for bug 659778

I'm sorry, I don't think I was clear enough. When I say "main window", I was referring to the contact list.

When keyboard focus is directed at the contact list, invoking the search-as-you-type behavior, and no contact matches the search, the window resizes to accommodate the message "Nenhuma equivalência encontrada" ("No match found") that is displayed across the contact list. After that, you cannot make the window horizontally smaller that it is.

I don't think this is the same as the bug #433651, as it does not refer to the text entry field of the message window.