Yep. I haven’t actually tested to see if this is still a problem, but will try out a fresh AP. I’m afraid to disable any radios in the field because of this. Mentioned it months ago but it was assumed that my config was wrong. It seems to be an issue when a radio is bridged and in ap-bridge mode.
Are you sure the unit is crashing? I saw this kind of behaviour when disabling interfaces that were part of bridge groups and with a serial console, traced it back to the bridge not cleaning up the MAC correctly. The unit continued to run, but wouldn’t communicate over any of the interfaces that remained in the bridge group until it was rebooted or the disabled interface was enabled again.