SUMMARY STEPS TO REPRODUCE 1.edit by program Kontact a group-name with eight receivers ( different e-mail-addresses ) 2. type in program KMail group-name as receiver and save or send the edited mail 3. Open the e-mail OBSERVED RESULT Crash EXPECTED RESULT using alle Group-Members as receiver of the e-mail as in older program-version SOFTWARE/OS VERSIONS Linux/KDE (available in About System) KDE Plasma Version: 5.12.9 KDE Frameworks Version: 5.44.0 ADDITIONAL INFORMATION Qt-Version 5.9-5 Kernel Version 5.4.0-52 generic