We didn't catch these because it's a bug adding new devices, and I haven't done that (consciously) in a while - or at least not since the memory tables commit ;)Except for a few well-known and long-standing issues (alerting, mostly), most things you'll notice will be fixed before you notice them. :>
This is because the developers run the current release on their production systems, so we catch bugs pretty quickly. No one hates gaps in graphs more than we do. :D