Seahorse locks my desktop

[Raffaele Ricciardi <rfflrccrd gmail com>]

Hello,

GNU Emacs' interface to GPG calls "gpg2" which, since GPG_AGENT_INFO 
refers to "seahorse", is run with the "--use-agent" option, and thus 
calls Seahorse.

If by accident I switch to another (fullscreen) window while Seahorse is 
running, I can't switch back to Seahorse's window anymore (Alt-Tab does 
not work), and to all effects, my desktop is locked and I have no option 
other than to force shutdown by keeping the power button pressed for 6 
seconds.

Is there any way around this?  I can't find any after having read 
"seahorse --help", "seahorse --help-gtk", "man seahorse", "info 
seahorse" and searched the Internet.

Thank you.