Hopefully this helps someone. I simply changed the channel from 36 ( 5180 ) to 40 ( 5200 ) and the problem went away.
Edit: spoke too soon :/
Well isn't that awesome? The whole reason I bought a pair of CRS326 was to MLAG some critical ports. Is anyone from Mikrotik going to chime in here?They acknowledged it is broken and even asked me how things should work, then said they don't have time to fix it.