Local forwarding has been disabled in the CAPsMAN settings, for all APs
All RB912 on the same network are configured with a bridge containing both ether1 and wlan1, and they are functionning quite nicely; it is only the wAPs that seem to have a problem with this setup
Lastly, I don't see the purpose in creating a bridge that will contain a single interface
Local forwarding is way faster than using DTLS transport - less cpu utilisation. See posts regarding hAP AC Caps Performance without local forward.
In the /interfaces wireless cap config you need to specify a bridge for local forwarding so the wlan's can be dynaically attached - hence you need one.
If you are not using local forwarding then you don't need a bridge at all. I would not be putting wlan1 in a bridge statically if I were using capsman - INMHO
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