Disappearing SSID

I have a Balance 20X with an integrated AP. I have two SSID networks configured. Since I updated my firmware to 8.4.0 the 2ndary SSID disappears. I have it on a schedule to make it available from 7a - 7p M-F but at seemingly random times it will just not be available. If I set the schedule to never apply changes then put it back to the intended schedule and apply settings it comes right back.

Has anyone else been experiencing the same issue?