I have re-opened my ticket #12971 because it is still happening.
Every time it happens Tablo fails to record, i.e. scheduled recordings not happening. The most annoying aspect is that you wouldn’t realize it until a few days or a week later before discovering that many of the recordings have failed to execute. That’s why I set myself a reminder to reboot/reset my Tablo/router every 4 days as an interim fix. The problem is still pretty much alive and unresolved and it happens exactly as described in the thread opened back in Dec last year (after 2.2.8 release):