[F18] keepassx auto type pastes rubbish

[Frédéric Bron]

I use keepassx to store my passwords. I have set Ctrl+Shift+K to open
the auto-type window where I can select the password entry that is
then auto-typed in the fields (using firefox 18.0-1.fc18).
F18 comes with keepassx version: keepassx.x86_64 0.4.3-6.fc18 @fedora.
It pastes only rubbish when using auto-typing (I can see this in the
user name field that contains plenty of special characters like ^@#...
On F17, it worked perfectly well with version 0.4.3-5.fc17
What happened?
Frédéric