I think a bug tracker is of need for this, because of how little basic testing seams to have been done on this, and before people suggest the same bug to need fixing 40 times.
But here is the short list of bugs:
-Selecting under Series (rfmod) the All Tracks & Cars produces the traditional freeze, but after that the sim unfreezes it becomes softlocked. You only option is to kill rf2 via taskmanager etc. (also you are stuck with the series selected)
-After uninstalling the selected rfmod via the ingame package manager and going back to the main menu throws an error crashing rf2 (but you finally get all track & cars selected after restarting)
-There is no "Are you sure?" prompts for deleting setups in the Setup Screen or mods in the Package manager.
-The length is with all tracks 20km (not precisely 20km, I do not remember the precise number off the top of my head, seams like Only Nordschleife length, which shows up as track length on every track)
Clear issues with the design:
-Move the package installation of steam mods out of the main menu and before the game loads.
Currently you wait for 5min for it to start, then install the stuff and ask you for a reboot, so another 5min, and if it was a DLC car that was updated, you will be greeted to skin installation afterwards, after which again, restart, so you waste about 20min with just getting into the game that can be cut down with this to 5-10min. Or you fix that you do not have to relaunch the game, however I think that is unrealistic
-Every time you open the race menu it loads the favorite servers
This is a gigantic waste of everyone time. Make a dedicated multiplayer and singleplayer button (with the multiplayer starting immediately into the serverbrowser perhaps), or lazy load the servers into the box (meaning the user can start interacting with the interface while the servers are loaded in), but even if you intend to go online, this boy will just from probability not hold the correct server somebody wants
Edit: Autodownload from servers does not work in the new UI. This feature has to return
Design Flaws with the setup screen:
-Overview: The dots around the car for the sub sections are half haphazardly thrown around it.
Make it orderly: The 3 side dependent one (Aero, Suspension and tire) should be put in front and behind it, the others above and below.
-Setup Options that are not available can not be distinguished with those that are easily, using a lighter grey tone would make this easier
--This applies also pluses/minuses that can not be pressed as the max/min has been reached (yes, you can see it by mousing over, but making it clear from the getgow does not require a user to move his mouse to see what he can do)
--For cars with two way dampers (slow and fast dampening are adjusted together), the arrows for adjustment are shown and highlight when moused over but don't do anything. They should resume being not available setup options like in the old UI
-Too many tabs. a lot of tabs are half empty, Tabs like Fuel, Electronics and Engine might as well be put together, also Brakes and Tires
-Multiple tabs require scrolling (Chassis, Suspension and Gearing).
This makes the menu time consuming to navigate and significantly less intuitive, as a consequence harder to learn and harder and more time consuming to find specific settings
--move the bar from the bottom to the side, which would clear out more space at the bottom to use (hard to implement, and may cause a lot of other issues)
--Decrease size of the setup options (may decrease readability, however the old design remained readable with way smaller sizes)
--Split the front and rear suspension into two tabs, having most to all of the rear suspension hidden behind scrolling makes it pointless to have them share a page
--Move the steering adjustment to the top of the Chassis section, it is way more used then you guys give it credit, and at the moment it is hidden at the absolute bottom
-The Overview should be a pinned button in the scroll selection, so the player can return to it at any time without having to scroll through the bar to find it again
-Overview: The dots show when comparing setups that under a certain section are differences ("x differences" in blue), this should also happen with changes (so showing in orange that there are "x changes")
-Overview: Lack of setup notes. Sure, they are in the setup browser screen when saving (However, on the Overview we are starting to run out of space)
I do not understand what people had against the old layout for setups, as it was one of if not the best in simracing. In 4 tabs you had everything, you had one for setup selection and fuel, one for gearing, aero and engine, one for suspension, one for chassis (which has been copy pasted), and one for tires, brakes and electronics. How they were mixed was perhaps slightly weird, like aero sharing with gearing and engine, but you could not beat how quickly you can navigate it and get and overview over a setup.
And certain settings being in weird tabs has been kept, like camber and caster not being in the suspension tab