Haven't experienced any bugs myself either. But as mentioned the UI is lackluster, and the civiliopedia isn't much help. It requires a bit testing to see why things are the way they are (or watching youtube tutorials in the background). A lot of very basic game elements aren't well explained. But yeah, might be good to wait. Have been playing the Civ series since the beginning and I've bought every game since IV on release.
I'm on my second playthrough and now that I know how stuff interacts I'm having a great time. I'm not that bothered by the change of eras mechanic as some. I've played Humankind and they had a similar mechanic, and while I can't put my finger on why, I find it better implemented in Civ 7.