Strange error with GnuPG: claims "no secret key" when terminal is too small

This is the content of my .gnupg/gpg-agent.conf:

pinentry-program /usr/bin/pinentry-curses

When I try to retrieve a password from pass' store, e.g. via pass -c path/to/password in a very small-sized terminal window, the command errors like this:

gpg: decryption failed: No secret key

So it's an error from GnuPG, caused, I believe, by not enough space for ncurses to draw the pinentry dialog. Can anybody reproduce this? If so, where can I report this bug?