SystemInfo on Mac Eval versions - expiration date format bug?

Seems like people running evaluation versions and asked to post SystemInfo here recently are showing up with expiry dates that look like this:

Expires on: 4442750-02-12

Is there some odd formatting bug that has crept in here? Windows SystemInfo on eval versions seem to be OK.

I’ve seen this reported, but I’ve never been able to reproduce it. By the time the user restarts their Rhino, it seems to go back to having a normal year present.