I observe a segmentation fault when I try the following:
gpa > Edit > Backend Preferences > Level Advanced > GPG for S/MIME
Switch "debug-level" to "Use default argument"
If you now hit the "Apply" button, gpa segfaults. I tried with the gpgme version
in Debian Sid (gpgme 1.2.0) and an own build of gpgme 1.3.2. It happens with
both gpgme versions. Backtraces attached.