gpg-agent of gpg 2.2.13 seems to pass wrong passphrase

[Tetsuji Rai]

Hi,

I'm using gnupg 2.2.13 and 1.4.23 on Fedora 29 on gnome desktop on two
computers.  Usually, I use 2.2.13.

On one desktop, gpg-2.2.13 works perfectly.    However on the other one,
gpg-agent seems to work wrong.   It doesn't seem to pass the passphrase
entered to gpg2 properly.   So I cannot decode files encrypted with an
error "Bad passphrase".   But on the console, without gpg-agent, gpg2
can receive the passphrase correctly and decode encrypted files.

So I want to know how this can be avoided, or how I can see if the
passphrase is passed from gpg-agent to gpg2.

Best regards,

-Tetsuji