igb(4) ifconfig status is incorrect after unplug

Hello,

In 12.0-RELEASE, STABLE, and 13-CURRENT, certain (or perhaps all?) igb(4)
interfaces report an incorrect media status after they are disconnected
(ethernet cable unplugged). Ifconfig reports active + autoselect/1000baseT
when it should report inactive.

I filed a bug for this last week and have not had any luck...
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236724

I am wondering if anyone in this list has any ideas or can help me begin to
pinpoint where things are breaking down. My current though is either the
driver does not receive the interrupt when its unplugged, or something else
is wrong, but I am unsure how to verify this. An ifconfig down + up always
resolves it (corrects the status).

Thank you.

-Nick