TOFU's encryption counter is not updated (a bug?)

[Teemu Likonen]

I have sent several encrypted emails to a friend and I'm using Gnus as
my email program. I'm using "trust-model tofu" but it seems that TOFU's
encryption counter is not incremented for the recipient's key. I queried
the TOFU info with a command like this:

    gpg --list-keys --with-tofu-info --with-colons KEY | \
        awk -F: '$1 == "tfs" {print $5}'

To me this is looking very much like bug. I'm using GnuPG
2.1.18-8~deb9u1 (Debian 9).

-- 
/// Teemu Likonen   - .-..   <https://keybase.io/tlikonen> //
// PGP: 4E10 55DC 84E9 DFF6 13D7 8557 719D 69D3 2453 9450 ///
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