At least here nothing happens, just an extended warning -
https://bugs.launchpad.net/ubuntu/+s...e/+bug/1222538** (seahorse-tool:14708): WARNING **: couldn't load all the keys (1/2) from GPGME
(seahorse-tool:14708): GLib-WARNING **: GChildWatchSource: Exit status of a child process was requested but ECHILD was received by waitpid(). Most likely the process is ignoring SIGCHLD, or some other thread is invoking waitpid() with a nonpositive first argument; either behavior can break applications that use g_child_watch_add()/g_spawn_sync() either directly or indirectly.
fixed with small patch to seahorse-nautilus