But some of the issues introduced with U9 are almost impossible to miss if you as much as start the game and play normally for a few minutes.
Broken biology scanner, broken fire groups and bugged Scorpion are the most obvious that come to my mind.
The same goes for U8 that gave us backtrails upon exiting SC, stations popping in seconds after you exit SC, borked restricted zones in settlements etc.
But most of those require you to do specific things, repeatedly, and to specifically look for that issue. Do you realize how big the game has become? To check every feature in every situation is impossible. And no, most of what you listed is not
fundamental.
Granted, the broken biology scanner should have been caught, what with bioexology being one of the new features that Frontier sould be focusing on, but the rest?
I didn't notice the broken fire groups, the (one) firegroup for my beluga's turrets worked just fine. You would have to specifically look for a problem with multiple firegroups.
I had a look at the scorpion, took it out for a ride, did some pew pew, didn't notice anything bugged with it. In fact I still don't even know what you're referring to there, it seemed fine.
The backtrails I ended up noticing only after several instances of dropping into normal space and realizing, there's nobody else here to make that trail (I just didn't see it before), and most importantly after witnessing firsthand how the trail appeared at the same time as my ship after I recalled it.
Stations (and other assets) popping in seconds after exiting SC is something you will often encounter when your network is slow, or you're on a slow hard drive and is probably not a bug per se. The recent instance of it taking this long might have been due to a bug, or down to the performance issues EDO suffers from, but it's not hard to see how only complaints from the players would have prompted Frontier to have a second look at it and to conclude that the lag is beyond what they consider acceptable. Or it's also likely that since it was hardly game-breaking, they decided to address it in the slew of performance-related fixes they would push out anyway.
As for the "borked restricted zone".. they're not obvious until you play at a bugged settlement, and the consequences are pretty mild since you can simply step away as soon as an NPC tells you to back off (and if you're sneaking around, it hardly matters).