Audio export truncated in Cantai project

I have a Dorico project for alto and soprano (the instrumentation is in a separate file) which renders fine and plays back live in Dorico, however if I export the audio, the last 90 seconds or so do not play back at all. Is it possible for someone to check if the same happens for them? I understand there have been some issues with audio export but this is the first time anything like this has happened to me – I tried it a couple of times to make sure I wasn’t doing something stupid. I’ve notified Cantai support but I expect they’re too busy to reply for quite a while.
oh for an immortal soul.dorico (1.7 MB)

UPDATE
Someone elsewhere got it to work. On the third attempt I did too! Very strange… So no need to look unless you’re particularly curious or have been having issues as well with Cantai audio export.