I was thinking the other way around … something similar to what you experienced the first time … but rather than acting weirdly and ditching, it fails to respond to the RC, flies off to who knows where (without a tracker), THIS creates the disconnection … and, since it’s doing its own thing, fails to acknowledge this by initiating RTH (or, for other reasons, planning to fly beneath trees/etc, the settings are such that RTH wouldn’t happen anyway) … and it’s gone!
But no - in either respect I don’t think there are a lot …. but I’ve not had either of my drones uncontrollably ditch, either. (Not that a tracker would help in that instance.)
Yeaaaaars ago, back in early P2 days, stories of fly-aways were rife (and I suspect some were absolutely genuine and not user error), and I did get a tracker. Never fitted and returned for a refund when it went faulty when playing with it at home. Decided that relying on a grand’s worth of high tech to behave was better than trusting any possible problem to £25 low-tech tracker wasn’t actually a logical move … only establishing a false sense of security.