I may be late to this but I am leaving this here in case anybody has a similar problem. I had the same issue, the sequencer on my microbrute would keep playing the previous note instead of a rest as it should, despite the sequence text files showing that there should be a rest there. I messed around in the midi control center and found out that changing my gate setting fixed the problem for me. After that the rests worked as intended in all three gate settings, so I guess it's just some minor bug they overlooked.