Unreproducible

Pit-boxes deciding race winners and more

For 2) and 3) you are aware that practice laps are very random due to driver errors (only switched off for Qualification) and setup is affecting lap times way less, especially if it's only a few clicks off. Same for a few points, those 20 Acceleration are still worth a mere 10 from a few weeks ago. That's not much in lap time at all especially if the balance in the car is moved to the worse. Yes, I personally really wish setup was a bit more complex, would not be the same every time and would leave a bit more guesswork and rather offer a range of good setups instead one single value and you'd have to find the one fitting to your car and strategy and getting it wrong would have a bit more impact. Some of that I'll likely never see as it's too demanding for the casual player and to complex to neatly fit on the App. But I can hope (for a hardcore mode perhaps one day).

4) Yes, if I, like today, seem to have rotten luck catching DRS from them and then the opponent gets double DRS just to be overtaken by the AI with lots of boost usage to get it next lap from the same car again is frustrating, but that's life. A lot of players want even more stuff happening randomly in races, I sure hope that's not going to happen. I can only hope AI driver gets a buff from absolute idiocy to almost intelligent, but I'm not sure if cutting down its racing ability even more is good solution, even though it would be better for my mood sometimes.

Edit: Double post as this part contains too much personal opinion I think.

Yes, but that one is no bug but the result of a design choice in the game (cars can't just pass each other in the lane and the car entering lane from its pits has the right of way), although even the other way round you might still be blocked, but perhaps less so as the passing car blocking is likely already/still at speed instead just starting to accelerate and unless you have one of the first pits and most of the time are the one leading a long train or vice versa it might happen more equally, but also there might be more likely a chance of a row of several cars blocking.

There's a bug, or unintended effect, in single car leagues though with the massive pit sharing, which increases the already present problem of already twice as many cars pitting at the same time.

The bugs I'm referring to that needs user input are some cars loosing seconds, sometimes twice or three times the regular stop, standing in their pit as if their pit is blocked (or the crew forgot where they put the tyres, or fuel) for no apparent reason and some cars, after getting blocked for example, getting passed in the lane as if they are not there.