strange MDynamicEQ behaviour

[MeldaProduction]

Ok, so I checked and I believe it's a coincidence actually - band 3 doesn't do anything in any case. All processing is done by gain 4. Now you have threshold really high and all of it is set in such a way, that it is extremely sensitive to details. So activating band 3 probably just causes some phase shift and slight increase in level, which accidentally makes it exceed the threshold.