I picked up my car in mid-January and have ~275 miles on it. Three problems have occurred that seem like software problems - but I won't know that for sure until it is returned from the shop where it is now.
1. From Day 1, the screen above the steering wheel was not operable/changeable via the thumb wheel. It displayed one gauge in the middle, the nav system on the right, and a series of blinking error messages on the left that could not be cleared. The thumb wheel does control the volume on the radio well so I don't think that is the source of the problem.
2. Intermittent connection issues with the Remote App on my iPhone. Worked for a few days, stopped for about 10 days, began again spontaneously. In the interim I called Jaguar support and they checked the servers/etc. and said things looked OK there. They recommended asking the Dealer to look at it.
3. Most recent issue was the failure of my ChargePoint charger to get a satisfactory hand-shake with the car on two separate scheduled midnight-6AM charging sessions. It had worked twice before, Then stopped for these more recent ones. Chargepoint did their diagnostics and said everything was OK from their end, The car's battery manager was "not accepting" the charge.
Bottom line: I love the performance of the car - handling, acceleration, etc, as well as the high quality of the physical elements of the car. But I definitely feel like a beta-tester of a new piece of software. I'm old enough to remember the joke about the British drinking warm beer because of the poor quality of Lucas electronics. And to have experienced same on a Triumph TR-3 I had in the early 70s. For this car I was hoping that this was in the past... But now I am not so sure! Just hoping they get these bugs worked out!
Just some tips that work for me. If your roller is broken, then they won't do much.
1) The roller switch pushes down to access configuration menus along with the L and R arrows next to it. A light touch is required to scroll volume or menu picks. Pushing down will select options, or close a warning message. I have mine pretty much ALL ON for the menu items. And my dash is, L to R: Drivers Assist window (tells you the Steering Assist status). Center is Speedo surrounded by time, temp, odo, and a multi-function field that is cycled by pushing the end button of the Left stalk, hold it down to zero a gauge. To the right is my NAV. My HUD shows speed, ACC mph setting/status, speed limit, NAV turn info when turn is coming up, and the Next Song on supported media. All of this was set in the Roller Menu selections.
2) I have connection delays, but I also have terrible cell reception at home. It takes longer to refresh and set than I like.
3) Don't unlock your car after plugging in DCFC. It will stop the session. Poor handshaking with DCFC stations has been a curse for all brands at certain chargers.
I'd say 1/2 the 'bugs' we encounter at first, are either not understanding how a control really works (the manual is poor/wrong), or external forces. But JLR is responsible for a lot of them too.
I had to sit in my garage for 1 hr twice, playing with the roller commands, playing with the center display's 5 menu pages, the Climate Screen, and General Settings. First hour was shortly after purchase just to config the car the way I like. The next was after a couple months, I went through everything again to get a greater understanding of what the control settings actually did.