PGP bug? Does not recognize primary uid

[Robert J. Hansen]

Jorgen Lysdal wrote:
> I was just playing around with latest version of PGP (9.8.2) for Mac,
> imported my key from gpg. It appears that PGP does not recognize what
> uid is the primary one. It just shows the oldest first. Is there more
> than one way to specify primary uid, or is it just one of the endless
> waterfall of ridicules bugs in PGP?

There are five answers here:

(a) This is a PGP question, not a GnuPG question.
(b) GnuPG is performing correctly.
(c) PGP is performing correctly.
(d) Implementations are given leeway in deciding how to interpret a
    primary userID.
(e) This behavior is not a bug, much less a ridiculous one.