check.torproject.org false-negatives "not connected through tor"

Tor Browser v6.0.4 on Linux reported that exiting via node 162.243.117.41 was "not connected through tor" on check.torproject.org

This seemed very odd, so we wanted to report it in case something anomalous is going on.

Trac:
Username: 6h72Q484AddGha8H