Is this sort of thing frequent with Unity in general?
No, it's incredibly, incredibly rare. Out of hundreds of thousands of unity games, it affects a few dozen from the sounds of it.
Pretty irritating to see a crash that nobody can do anything about. I mean, bugs are one thing, gotta expect those, but unfixable bugs, because of the underlying tech? Ugh. That seems extra frustrating.
Yeppers. I have a feeling that we're actually the ones triggering it SOMEHOW, but there's no way for us to tell how. It's like if you send a lot of packages through UPS, and everything seems fine most of the time. But every so often a UPS truck catches on fire, and pretty much ONLY when it's carrying your packages... particularly certain kinds of packages but not always... and the package is something harmless like milk anyway... well, you start to get suspicious.
Why, exactly, do some UPS trucks catch fire when a certain volume of milk is shipped in them? Why only when I do it? Is there some trace chemical in my milk jugs? Don't lots of people ship milk? I mean, it's not the most common thing to ship, but it's also not that rare. Also, isn't milk really not supposed to be flammable? And the fire isn't in the area with the milk anyway? But no fires if no milk?
*X-files theme plays...*