The ipad hardware I’m working with is a model A1701, 10.5" ipad-Pro (2017 i think).
It’s an older model, but worked just fine before the most recent iOS update.
Admittedly, I’m not an expert in this, but it feels like there is a timing issue with variables being used before being initialized somewhere, related possibly to react’s asynchronisity, and perhaps the speed, and/or order that the iOS is running instructions on an older gen ipad.
On one visit, to the non-working links, I’ve supplied, it did manage to render once on the ipad, but have not been able to repeat that. Not sure if the codesandbox was changed briefly, it did appear another user was in the codesandbox at that time, or the issue is actually intermittent, but happens so often that it appears constant.