Version: 1.12.0 (using 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2)) "release 140", KDE:KDE4:Factory:Desktop / openSUSE_11.1) Compiler: gcc OS: Linux (x86_64) release 2.6.27.23-0.1-default RMB on a pdf file in the header opens a popup save/open - click on open - the full list of apps is opened this only happens the first time - IMHO the attachment is not loaded/available yet after opening the attachment at the bottom - it works also from the header Settings IMAP + laod attachment on demand
Tested in KDE 4.4 and both work as expected