Why do MPE MIDI recordings sound nothing like what they sounded like while I was playing them?

I've just got a Linnstrument. I'd made a sound on the free synth Vital, and was playing along to something I'd recorded in Logic (11.1.2), and I recorded it, and when I played it back, it sounded like the MIDI controllers had been mangled. I'm not sure whether it sounded like there was some data missing or some doubled data, but at any rate, the recording was unusuable.

For reference, I tried doing exactly the same thing in Reaper and it worked fine.

By the way, I've been using Logic since version 6. The only other things going on in the project are one synth track and one audio track. There's nothing apart from Vital on the track in question. The recording uses tracks 2-16 for MPE data. I can see that all the controllers are in there, but the values do look kind of bitcrushed or something.

Surely there's something I'm doing wrong. i can't believe Logic's ability to record MIDI on multiple channels is this poor.