It looks like the indentation for function arguments is screwed up when the line gets to long. No arguments needed for astyle to reproduce the problem.
void doSomething()
{
m_thismustbethatlong = my_func_12345678(m_BookmarkManager,
i18n("&Bookmarks"),
this);
m_thismustbethatlong = my_func_123456789(m_BookmarkManager,
i18n("&Bookmarks"),
this);
}
Tested with 2.04 from openSUSE and svn HEAD (r461)
Increase the value of max-instatement-indent.