I love ACF, it’s my favorite plug-in, and our website relies on it heavily. I don’t like the idea of using a plug-in to allow another plug-in to work. Like many, I try to avoid using plug-ins if I can figure out how to code it. So this fix is not ideal, but if we get too far down the line here with WP versions, I might just take that route.
It sounds like they’re working things out, though. I’m excited to get everything back up to current versions ASAP.