I ran into such a strange issues today. Wondering if anyone else experinced this.
On an MX65W I was unable to get out to the Internet using SSID 1.
I configured SSID 1 with WPA2 PSK and only allowed WPA 2.
Default VLAN and firewalls rules allowing any outbound traffic from any device. Rebooting the device didtn’t help.
I then used the exact same settings on SSID 2 and it worked just fine.