It looks like the Open AP SSID was too long. I was able to test this on a nano & tetra. When I reset a pineapple I change the SSID to something really long. After a reboot it failed to connect (except though the rj45 cable). When I shortened the SSID to something reasonable I am able to reboot both systems and connect fine without resetting anything. I have tested this several times. So, it was a fix for me.
Same issue. I can't connect to the Admin or Open AP but I can over eth0 (rj45 ethernet). Once in I change the admin wifi password (back to the exact same password), the wireless resets, and then I can connect to the Admin or Open AP. When I reboot I have to do this all over again.