Rise courses send inconsistent tracking data to Moodle (or none at all)

Cheers, I got a detailed reply from Support. The short of it is to keep Moodle up to date as a patch to alleviate some of the issues related to closing the package and how it saves data during that close - which is a problem affecting Chrome and Edge but not other browsers at this time. Moodle devs discussed and patched this some time ago (in a version higher than my client runs of course - time to convince them to upgrade) - here is the patch https://tracker.moodle.org/browse/MDL-67175 and discussion https://moodle.org/mod/forum/discuss.php?d=404312 for reference. 

It's confirmed that Rise is only signalling back the bulk of the completion data only upon course exit, rather than "as you go" and that there isn't any graceful handling if the network drops out and comes back later (which is surprisingly common, even on physical networks); this may change in the future.